English (Compulsory) For Class IX - Unit 1 - Ethics Character builder - Text Book Exercise 1.1 -1.3

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The Last Sermon Of Holy Prophet (P.B.U.H)

TEXT BOOK EXERCISE 1.1 - 1.3

UNIT 1.1 READING COMPREHENSION

While Reading
Exercise 1: 
Read the text and tick (✔) the correct answer.
1. The text is about:
a) The battles of Islam.
b) The family of Prophet Muhammad (P.B.U.H).
c) The migration and teachings of Prophet Muhammad (P.B.U.H). 
d) The last pilgrimage. ✔

2. Which of the following message is mentioned in the Last Sermon, as given in the text:
a) People should not hurt others.
b) Both men and women have rights over each other.
c) Muslims are a part of one brotherhood.
d) All of the above. ✔

Vocabulary
Exercise 2:
Note: Read chapter in text book and underline Following words:
Write down meanings of the following words.
ancestors, migrate, aggressive, hypocrites, pagans, harmony, prohibited, alliance, unified, consolidated, astray, beware, superiority, piety, legitimate, equitable, meritocracy, principle

S.NO.	Words	Meanings
1.	Aggressive	Likely to attack.
2.	Alliance	A kind of working relationship, Union
3.	Ancestors	Family members who were before the grandparents, Forefather
4.	Astray	Away from the correct path or direction.
5.	Beware	Be careful, Be cautious and alert.
6.	Consolidated	Make secure or strong.
7.	Equitable	Fair and just.
8.	Harmony	Understanding and accepting each other's thought and feelings.
9.	Hypocrites	People who pretend to be what they are not.
10.	Legitimate	According to the rules and laws.
11.	Meritocracy	Giving awards and positions to people according to their capability and performance.
12.	Migrate	To move from one place to go or live in another place.
13.	Pagans	People who do not believe in any of the main religions of the world.
14.	Piety	Strictly following the teachings of one's religion.
15.	Principle	A rule for behaving in a certain way.
16.	Prohibited	Did not allow doing something.
17.	Superiority	To be higher in rank or position.
18.	Unified	Linked people together.

Exercise 3:
Use above words in your own sentences:

S.NO.	Words	Meanings
1.	Aggressive	Watching violence on TV makes some children more aggressive.
2.	Alliance	States seek to become stronger through alliance. Or In the World War II, Germany made an alliance with Italy.
3.	Ancestors	His ancestors came from Turkey. Or My ancestors came to Lahore during 1800s.
4.	Astray	His brother was led astray by bad companions. Or The boy was led astray by bad companions.
5.	Beware	Motorists were warned to beware of slippery conditions after rain. Or Beware of pickpockets while roaming in shopping markets.
6.	Consolidated	The two firms consolidated to form a single company. Or The company has consolidated its position as the country's leading gas supplier.
7.	Equitable	Government established an organization for a more equitable distribution of wealth and power among poor. Or Each person must have an equitable share.
8.	Harmony	They worked in perfect harmony. Or I try to live in harmony with nature.
9.	Hypocrites	She likes straight talk and hates hypocrites. Or They are such hypocrites that they never practise what they preach.
10.	Legitimate	He had a legitimate reason for being late. Or Their business operations are perfectly legitimate.
11.	Meritocracy	The teachers believes that the educational system should be a meritocracy. Or The theory assumes the existence of a "meritocracy" means that there is equal opportunity for all.
12.	Migrate	In winter season, mostly birds migrate to warm places.
13.	Pagans	People who worship money only are also consider as pagans. Or The pagans had statues of gods and places of sacrifice.
14.	Piety	King Solomon was famous for his wealth, wisdom and piety. Or Two old men touches our hearts and teaches us what true piety.
15.	Principle	He was a man of principle and good to his word.
16.	Prohibited	Smoking is injurious for health and strictly prohibited. Or Smoking in this hotel is strictly prohibited.
17.	Superiority	Being an administrator doesn't give any one superiority on others. Or Her sense of superiority makes her very unpopular.
18.	Unified	An effective and unified system of rules and regulations is the real cure to corruption. Or The couple made a unified decision to buy the house they both liked the best.

Exercise 4:
Read the text and answer the following questions by circling the right answer.
1. How did the Quraish treat the Holy Prophet (P.B.U.H) They?
a. favoured him.
b. opposed him.
c. loved him.
d. criticized him.

2. When did the Holy Prophet (P.B.U.H) migrate to Madina?
a. 620 A.D.
b. 621 A.D.
c. 622 A.D.
d. 623 A.D.

3. When the Holy Prophet (P.B.U.H) settled in Madina, which of the following groups of people lived there?
a. Muslims and Jews
b. Muslims, pagans and Jews
c. Muslims, pagans, hypocrites and Jews
d. Muslims, hypocrites and Jews

4. Where did the Holy Prophet (P.B.U.H) deliver his last sermon?
a. Quba mosque
b. Uranah valley
c. Jabal-e- Rehmat
d. Hudebia

5. When did the Holy Prophet (P.B.U.H) perform his last Hajj?
a. 06^th year of Hijra
b. 08^th year of Hijra
c. 10^th year of Hijra
d. 12^th year of Hijra

Exercise 5:
Read the text and find out whether the statements are right or wrong. Tick the appropriate column. One has been done for you as an example.
Note: We have marked statement no.3 answer as right. but according to book there is a bit confusion in statement no.3.

S.NO.	Statements	Right	Wrong
1.	The mission of the Prophet (P.B.U.H) continued for 23 years.	✓
2.	All the Quraish refused to accept Islam.		✓
3.	The City of Yathrib was less than 320 miles away from Makkah.	✓
4.	The Holy Prophet (P.B.U.H) decided to build a mosque at a place outside Yathrib before entering the city.	✓
5.	Today, Yathrib is called Madinat an-Nabi.		✓
6.	The people of Madina agreed that Prophet Muhammad (P.B.U.H) should settle their disputes.	✓
7.	The Holy Prophet (P.B.U.H) addressed such a large gathering of Muslims for the last time at Arafat.	✓
8.	Islam has different laws for the black and for the white people.		✓
9.	All human beings are children of Adam and Adam was created from dust.	✓
10.	Only the people who heard the last sermon were supposed to follow it.		✓
11.	Before the advent of Islam, Quraish used to worship idols and did not believe in one God.	✓
12.	After twelve days' journey, the Holy Prophet (P.B.U.H) reached the outskirts of Yathrib.		✓
13.	The farewell pilgrimage is one of the most significant historical event for the Muslims.	✓
14.	The noblest of you in Allah's sight is the most God-fearing.	✓
15.	Everything is legitimate to a Muslims which belongs to a fellow Muslim.		✓

Post Reading
Exercise 6:
The table has messages from the Last Sermon of the Holy Prophet (S.A.W). The first part of the sentence is given in column A and the second part is given in column B, in a jumbled order. Read the text, match the part in column A with the correct part in column B and write the answer in column C. The first one has been done for you as an example.

S.NO.	Column A	Column B	C
1.	Only those people were superior	a) to the people to whom they belong.	1, f
2.	All Muslims were tied to each other	b) that were based on blood and wealth were useless.	2, g
3.	The only thing that made one person better than the other	c) you may get hurt in return.	3, j
4.	No Muslim had a right to things belonging to other Muslims	d) have rights over each other.	4, i
5.	Satan will try to misguide you in small matters	e) as a sacred trust.	5, h
6.	Therefore, all claims to superiority	f) who led a righteous life.	6, b
7.	Return all things kept with you in trust	g) in the bond of brotherhood.	7, a
8.	Both men and women	h) so be careful.	8, d
9.	If you will hurt others	i) unless they gave these of their own free will.	9, c
10.	Consider the life and property of every Muslim	j) was the goodness with which they led their lives.	10, e

Exercise 7:
Work in pairs and complete the following statements. Write the complete sentences in your notebook.
1. Most of the Quraish refused to accept Islam because they thought that the Holy Prophet (P.B.U.H) was against their gods and the ancestors.
2. The day the Prophet Muhammad (P.B.U.H) entered Yathrib, marks the start of the Islamic Calendar.
3. The Holy Prophet (P.B.U.H) invited the leaders of all the communities living in Madina to discuss harmony and peace among them.
4. The three main points of the Charter of Madina were :

1. It mentioned the rights and duties of the Muslims and the Jews of Madina, gave freedom of religion.
2. Prohibited any alliance with the outside enemies.
3. It also declared that any dispute would be referred to Prophet Muhammad (P.B.U.H) for settlement.

5. In order to strengthen the position of the Muslims in Madina, the Holy Prophet (P.B.U.H) took three major steps, which were:

1. He unified the different Arab tribes under Islam,
2. Carried out social and religious reforms, and
3. Administrative developments

that further consolidated the Islamic community in Madina. 

6. The farewell pilgrimage of the Holy Prophet (P.B.U.H) is an important event for the Muslims because:

1. It was the first and last pilgrimage made by Prophet Muhammad (P.B.U.H),
2. It was an occasion when he taught Muslims how to perform the Hajj.
3. Moreover, it was during this Hajj, that he delivered his last sermon.

7. The Holy Prophet (P.B.U.H) asked the people in the gathering to listen carefully as:
He said, "0 people, lend me an attentive ear, for I know not whether, after this year, I shall ever be amongst you again. Therefore, listen to what I am saying to you very carefully and take these words to those who could not be present here today." 

8. The Muslims can ensure that all people get their fair share by making honesty, justice and meritocracy their guiding principle.

Exercise 8:
Work in groups as divided by the teacher. Orally discuss and then prepare a chart on one of the following topics, as assigned by the teacher.

1. The principles that the Holy Prophet (P.B.U.H) followed after migrating to Madina so that Muslims and non-Muslims could live in peace and harmony.
Ans: Forming A Constitution:
In order to ensure that all people in Madina, lived peacefully with each other, Prophet Muhammad (S.A.W) invited the leading personalities of all the communities to discuss this matter. He wanted the different groups to reach a formal agreement for harmony among the communities and for the security of the city of Madina.
He succeeded in drawing up the Constitution of Madina, also known as the Charter of Madina, through which a kind of understanding was developed among all the communities living in Madina.
Principles Of Constitutes:
It mentioned the rights and duties of the Muslims and the Jews of Madina, gave freedom of religion,
and prohibited any alliance with the outside enemies.
It also declared that any dispute would be referred to Prophet Muhammad (P.B.U.H) for settlement.
In later years, he unified the different Arab tribes under Islam, carried out social and religious reforms, and administrative developments that further consolidated the Islamic community in Madina. 

2. The basic messages in the last sermon about the rights of other people and why it is important to respect them.
Ans: About the rights of other people Prophet Muhammad (P.B.U.H) said,:
"0 People! regard the life and property of every Muslim as a sacred trust. Return the goods entrusted to you to their rightful owners. Hurt no one so that no one may hurt you."

The messages conveyed in this sermon are for all times. If the Muslims follow these messages, the result will be a fair and equitable society, and no one will harm other. 

3. At least five teachings, as described in the Last Sermon of the Holy Prophet (P.B.U.H), that we should practice in our daily life in order to strengthen our society.
Ans: he gave the following messages in his last sermon:

1. "0 People! regard the life and property of every Muslim as a sacred trust. Return the goods entrusted to you to their rightful owners. Hurt no one so that no one may hurt you."
2. "Beware of Satan, for the safety of your religion. He has lost all hope that he will ever be able to lead you astray in big things, so beware of following him in small things."
3. "0 People, it is true that you have certain rights with regard to your women, but they also have rights over you."
4. "All mankind is from Adam and Adam was created from dust. The noblest of you in Allah's sight is the most God-fearing. An Arab has no superiority over a non-Arab, nor does a non-Arab have any superiority over an Arab; a white has no superiority over a black, nor does a black have any superiority over a white, except by piety and good action. I, therefore, crush under my feet all the false claims to greatness and superiority founded on blood or wealth."
5. "Every Muslim is a brother to every Muslim and that the Muslims constitute one brotherhood. Nothing shall be legitimate to a Muslim which belongs to a fellow Muslim unless it was given freely and willingly." 

4. Some of the bad practices that we have adopted, which are against the teachings of the last sermon of the Holy Prophet (P.B.U.H), and how these are affecting our society.
Ans: Following are some of the bad practices that we have adopted, which are against the teaching of the Holy Prophet (P.B.U.H):

• We are not following Quran and Hadiths in our daily life, and straying for Islam.
• We are slave of our desires and wishes and do not think whether it is a good deed or sin.
• We treat our women badly and consider them inferior and do not give them their rights.
• We also take bribe and also take interest when lending money to people.
• We misbehave poor people and favor powerful people whether they are doing wrong.
• We tend to judge people by their physical attributes or financial status, this discrimination is the roots of human suffering and cause of war and hatred among people.
• Moreover, we have become enemies of each other and do not behave wisely.

UNIT 1.2 LISTENING AND SPEAKING

Focus: Sharing information and ideas.
Exercise 1:
Work in group as mentioned in Step A, B and C in text book exercise. ( below notes are just for idea)
Topics 1:
1. Some unfair means that students use in exams.
Ans: Types of Unfair Means of Cheating:

• Using unfair means in the form of chits, guides, question paper leak, bribed teachers or examiners etc.
• Cheating using a helping material: means cheating by book, written material found on a piece of paper, notes or material written on the student's own body such as on a hand or arm.
• Malpractices includes changing answer books, impersonation which means Another person attempts the exam in the student's place, paid candidate.
• Electronic device found during paper: Some students use electronic devices such as mobile phones which are used for calling during exam time, sending and receiving SMS, calculators mathematical-based exams such as statistics and mathematics.
• Cheating through computer: Online cases include Use USB and PDAs and digital dictionaries for cheating purposes.
• Misbehavior cases in examination room.
• Cheating involving another student.
• More males are involved in Unfair Means of Cheating than females.

2. Reasons for using unfair means in exams.
Ans: The most common reason for cheating are:

1. Stress or Fear of Failure: is the main problem to cause the students cheat in exams. Their fear dwells in their parents complain about bad grades, their friends mocking and a possible dark future too.
2. Lack of Self-Confidence: There are few students who have no potential of taking up the challenge of exams. Low self-esteem and lack of ability cause them to cheat. Instead of studying hard, paying attention to classes.
3. Lack of Interest: Some students know that they are going to take over their father's business or follow traditional family business after their studies. For them, school is just a formality and a pass time. They find no need to study and cheating seems to be an easy way out.
4. Lack of knowledge: generates cheating. When the student decides to cheat he may or may not know the material or due to lack of understanding during teaching lesson. He tries to complete the course by hook or by crook without understand the lesson.
5. Cheating for Fun and Show-off: Some students cheat in exams is because enjoy taking risks. They want to be popular by showing-off their ability. For some, it is an ego issue and for some, it is a dare for a bet or otherwise.
6. Availability of Sources: Technology and money facilitated cheating tools in the form of elements such as ex-students, co-students, parents, teachers, examiners, invigilators, examination staff and outside elements. They are readily available either due to money or otherwise.
7. Easy Approach: Using unfair means in the form of guides, paid candidate, question paper leak, bribed teachers or examiners etc. appears to be a shortcut to hard work.
8. Habitual Use: For successful cheaters, it becomes a bad habit which gives them the confidence to do it again. Such students just can't do without cheating in spite of the fear of getting caught.
9. Poverty: Some students come from poor families and they are working too many hours in paid employment to cope with schoolwork. They can either study or work so an easy way out is using unfair means.
10. Substance Addiction: Some have developed an addiction to drugs or alcohol. Such students have only one thing in mind and that one thing sways them away from studies.
11. Anti-social Elements: Students from families having a history of violence and psychiatric problems tend to be influenced by their environment. They indulge in crime and other anti-social activities which keep them away from studies.
12. Good Grades: Some students are ambitious and want good grades at all cost to get admissions in reputed college or university. They do not want to leave any chance to top and that make them to cheat in exams.

3. Impact of using unfair means in exams on students' performance.
Ans: The student uses unfair means by cheating to do the work and take the credit for it as their own without realizing the effects this behavior creates. The worst things that could happen to the student are that:
1. Lack of Knowledge:
Students would learn more by doing their own work and learning from their own mistakes. One long-term effect of cheating is that the student won’t learn anything from the work that others do, because they do not gain any knowledge.

2. Fail to accomplish their goals:
The cheaters would not be able to accomplish their goals and would never have the creativity to do something on their own, they are used to having someone else doing the work for them. Their will power fail to accomplish something by their own.

3. Moral values are decreasing:
Cheaters not only are students who cheat successfully more likely to cheat again, but as they cheat more frequently they rationalize their cheating to ease their consciences. Habitually, they will enjoy cheat others without heaving the concept of right and wrong.

4. Self deceptions:
Such students who cheat begin to value grades only for the grades themselves and not for the education they deceive their selves. They are temporary achieving that success which is not long lasting.

5. Inability to Advance Academically:
Colleges and universities each have their own academic integrity policies, and many are severe. If student progress to next class by cheating but he will not able to cover higher education and always looking for some one to do his work.

6. Personal Trust:
If word gets out that you're a cheater, it could affect how much the people around you trust you. Not only school officials but people in your personal life as well: parents, siblings, friends and significant others do not trust on you. Because your willingness to cheat says your ethics have a limit.

Conclusion:
Finally, if a student is caught cheating the consequences is always crucial. When the student is caught cheating he will face the failure of the exam or even failure of the course, or expulsion of the school. It seems that cheating is a reasonable decision, but the long-term consequences damage the person's ability and trust.

4. Effect of using unfair means on the future of students.
Ans: This problem is like a disease in our educational system which is messing up the future of the youth and the society as a whole as well.
1. Affected Innocent:
Cheaters aren't the only ones affected by cheating. when cheaters constantly witness successful academic dishonesty they can become disheartened and grow spiteful of others, along with the educational system that fails to catch them. Deserving students unable to achieve their fair position that develop a corrupt society.

2. Affect Student's Career Development:
One effect of student cheating is that the student is not learning anything. Some students get into the habit of cheating, they don’t study and the long term cheating affects the student’s career development.

3. Unable to Find A Job:
If the student does not learn in the course because of cheating will affect them to get a job with a good pay, there is no employer that would keep a person that has no knowledge for the job they applied for.

4. Looses Confidence:
When a student cheats is because he has a low-self esteem and lack of morals that cuse the student to maintain an acceptable grade by cheating. That student looses confidence in him and chooses to cheat will end with negative effects.

5. Lack of motivation:
Furthermore, if the student keeps having unacceptable grades is most likely that he would chose to cheat in order to get better grades. Lastly, failures to study do to the lack of motivation generate cheating in practical life.

Conclusion:
The students who are willing to cheat are willing to commit other unethical deeds to get ahead in life. These students may get good grades and promote to next level ,but in practical life, they are failure and incapable of doing anything by their own. In true words, "Cheaters are loosers".


Step: C
Collect all the data and prepare a talk for giving in the assembly, to discourage use of unfair means during exams.
Discourage Unfair Means in Exam:
1. Purpose of Examinations: The purpose of examinations becomes a method to gain grades rather than for it's learning value, which degrade the value of examinations in the eyes of the students and it becomes a formality then.

2. Legal Actions: Strict laws regarding cheating should be implemented to prevent cheating.

3. Encourage to Informers: Students who are aware of cheaters should be encourage in secret to prevent this dishonesty.

4. Video Monitoring: Using cameras in examination halls and 100 % chance of getting caught which itself will prevent cheating.

5. Monitoring School Staff: School staff should be tracked by authentic detectives to catch black sheep among them.

6. Stress on Policies and Guidelines Regarding Cheating: These need to be fully communicated to students in various ways like the bulletin board, verbal announcement before the exams, warning on the exam sheet etc. This may induce a fear and rejection of cheating.

7. Fair Exams: Fair exams should be taken. It means The exam cover the syllabus that has taught and students should have enough time to complete the exam. There is also a reasonable grade distribution.

8. Pre-coded Sheets: Use of Pre-code answer sheets and test booklets that use a numbering system so that the number on each test booklet matches the one on each student’s answer sheet is also an effective way to prevent cheating.

9. Clever Marking: To eliminate cheating after the exam has been returned to students, mark the answer sheets in such a way that answers cannot be altered (such as using a permanent pen).

10. Seating Arrangements: Number seats and tests and then assign students to sit in the seat with the same number as the number on their test.

UNIT 1.3 LANGUAGE PRACTICE

Rules of conditional sentences (Second Conditional) OR Type 2 conditional sentences:
Type 2 conditional sentences are often used for talking about imaginary or unreal situations. Here are some basic rules followed in the second conditional sentences:

• The verb in the clause with 'if' is in the simple past or past continuous tense.
• The verb in the other clause uses the modal 'would' (in negative sentences 'wouldn't' is often used). Other modals that can also be used are 'could' and 'might' and their negative forms (couldn't, might not)
• The 'if' clause can come at the beginning or at the end.
• The 'if' clause is separated from the main clause by a comma.
• In a type 2 'if' clause, sometimes 'were' is used instead of 'was'.

Examples:
If they drank sufficient water, they would have a healthy skin.
If Sana was watching television, the lights would be on.
I would go mad, if I received a billion rupees.
If allowed, they could sleep the whole day.

Exercise 1:
The following table has some second conditional sentences. The first part is in column A and the second in column B, but in a jumbled order. Find the correct match from column B and write the answer in the answer column.

S.NO.	Column A	S.NO.	Column B	Ans
1.	If all people in Pakistan became honest	a.	if the students and teachers paid due attention.	1, g
2.	I could easily get an A grade in my exams	b.	if they had an updated map of The area	2, f
3.	If our driver did not drive so fast	c.	they could visit all their friends.	3, d
4.	The tourists would not be lost	d.	we would not be in hospital right now.	4, b
5.	If they had the time	e.	if she presented it well.	5, c
6.	If money grew on trees	f.	if I worked really hard.	6, h
7.	Our schools would produce capable leaders	g.	the country would progress very fast.	7,a
8.	Her idea would be accepted	h.	everyone would be rich.	8, e

Exercise 2:
Complete the following second conditional sentences by using the correct form of the verbs given in brackets. You may use other verbs, but make sure that you use the correct form.
Next, write the correct sentences in your notebooks.

Example:
1. If we had a computer, (finish)
If we had a computer, we could finish this work quickly.
If we had a computer, we could find some more information.

2. We might see a bear, (go)
We might see a bear, if we went further in the woods.
We might see a bear, if we climbed on a tree.

Exercise: 
a) If she studied harder, (get)
If she studied harder, she could get first position in the class.
If she studied harder, she could get better grades.
If she studied harder, she would have passed the exam.

b) If you grew multiple crops on your land, (earn)
If you grew multiple crops on your land, you could earn more money.
If you grew multiple crops on your land, you would have variety of crops.

c) People would fly, (have)
People would fly, if they had wings.
People would fly, if they had more money.
People would fly, if they grew wings.

(d) If I owned a camera, (take)
If I owned a camera, I would have take your picture.
If I owned a camera, I would participate in photography competition.

(e) They might win the match, (work)
They might win the match, if they worked hard.
They might win the match, if they had tried.

(f) If Abdullah lived with his family, (save)
If Abdullah lived with his family, he could save lot of money.
If Abdullah lived with his family, he would learn good manners in life.

(g) My family would move to the city, (allow)
My family would move to the city, if they allowed me to attend college.
My family would move to the city, if they allowed me to do a bank job.
My family would move to the city, If they bought a new house there.

(h) She could become a good doctor, (get)
She could become a good doctor, if she got MBBS degree.
She could become a good doctor, if she got admission in medical college.
She could become a good doctor, if she worked hard.

Exercise 3:
Complete the following dialogue by using some or all of the words given below. You may use your own words or use these words any number of times. The first one has been done, as an example. Do this exercise in your notebook.

want, have, come, fall, sick, join, swim, go, plan, be

Zahid: We had to call off our picnic plan. First, we decided to go to the seaside but we could not do so.
Qasim: Why?
Zahid: If we went to the sea side, Salim would not come.
Qasim: Why would Salim not come?
Zahid: If he went for swimming, he would fall sick.
Qaim: You don't fall sick when you swim.
Zahid: Salim's heart is weak. He would be terrified, if he he got into the water.
Qasim: You could have gone to the park.
Zahid: Tahir and Salman said that if we went to park, they wouldn't join us.
Qasim: Then what?
Zahid: Someone suggested that we visit the museum. However, half the group objected and said that if we planned to go to the museum, they would not go inside with us.
Qasim: Why?
Zahid: They said that they would not wanted to tired themselves, if we just stayed outside the museum.
Qasim: They were right. If you want to have fun, then you have found that inside the museum.
Zahid: So, if we tried please everyone, we would be agreed on a place to go, hence, the plan was dropped.

Revision:
Exercise 4
Punctuation
Punctuation are used for clarity. Few rules or tips of punctuation are given below:
1. Period or Full Stop (.): We use it:
(i) at the end of a sentence. e.g. He is a student.
(ii) For abbreviations. a.m., p.m., B.C., A.D., etc

2. Question Mark (?): We use it:
(i) after a question e.g. Are you happy? What's the time?

3. Comma (,): We use it:
(i) between the parts of a series. e.g. I bought a pen, some pencils, an eraser and a sharpener.
(ii) After direct address e.g. Samina, I will help you. Do it again, Najia.
(iii) After introductory words e.g. Yes, I was absent yesterday.
(iv) to separate the reporting speech from the direct speech. She said, "He is angry with me." "What do you want", they said.

4. Sign of exclamation (!): We use it:
(i) to express surprise, shock, a sharp outburst, or a command, etc. Oh!, Ah!, Wow!, Ugh!, Nonsense!, Watch out!, Run away!, What a fine day!, How heavy!, Etc.

5. Capital Letters: We use them:
(i) at the beginning of sentences
(ii) a proper noun
(iii) adjectives made from proper nouns
(iv) each line of a poem
(v) the first word following the inverted commas, etc.

Exercise 4:
Work in pairs and correct the punctuation and capitalization in the following passage.
Here are some tips on how to do it:
Step 1: Read each paragraph and identify where each sentence is getting completed. Mark that part again to see whether it is a question or a statement. If it is a question, put a question mark, otherwise put a full stop.
Step 2: Read each sentence again to see where commas and apostrophes are needed.
Step 3: Check and put the capital letters where needed.
Step 4: Read the whole Passage again to check for any errors.

Forming Habits

how long does it take to form a new habit i looked for an answer the same way most people do nowadays i asked google the answer i got was 21 days it seemed that if you repeat a behaviour everyday for 21 days you can form a brand-new habit then i asked can one change all types of behaviour in 21 days or just some types i was not able to find an answer all i could find out was that if it was exercise smoking writing a diary or turning cartwheels you could do it 21 days the important thing was to maintain a chain of 21 days without breaking it.
One psychologist mr mohan decided to do some research to find out if all new habits could be formed in just 21 days about 100 people from the multan university participated in the research they were asked to choose a behaviour that they wanted to turn into a habit they all had to choose something they did'nt already do that could be repeat every day what do you think the result was the results showed that on average it took 66 days until a habit was formed however this does not mean that  people were'nt able to form new habits in 21 days according to the study findings some habits could be formed in 21 days while some could take as long as 254 days so 21 days to form a habit is probably right as long as all you want to do is drink a glass of water after breakfast anything harder is likely to take longer to become a really strong habit and in the case of some activities much longer.

Ans: How long does it take to form a new habit? I looked for an answer the same way most people do. I asked `Google', The answer I got was 21 days. It seemed that if you repeat a behavior everyday for 21 days, you can form a brand-new habit. Then I asked can one change all types of behaviour in 21 days or just some types. I was not able to find an answer; All I could find out was that if it was exercise, smoking, writing a diary or turning cartwheels you could do it in 21 days. The important thing was to maintain a chain of 21 days without breaking it.
One psychologist Mr Mohan decided to do some research to find out if all new habits could be formed in just 21 days. About 100 people from the Multan University participated in the research. They were asked to choose a behaviour that they wanted to turn into a habit. They all had to choose something they didn't already do, that could be repeated every day. What do you think the result was?
The results showed that, on average, it took 66 days until a habit was formed. However, this does not mean that people weren't able to form new habits in 21 days. According to the study findings, some habits could be formed in 21 days; while some could take as long as 254 days. So 21 days to form a habit is probably right, as long as all you want to do is drink a glass of water after breakfast. Anything harder is likely to take longer to become a really strong habit and in the case of some activities much longer.

Mathematics For Class IX Science - Unit 01 - SETS - Explanation Of Exercise 1.2

GO TO INDEX
Unit 01: SETS
INTRODUCTION TO CHAPTER

Explanation Of Exercise 1.2

OPERATIONS ON TWO SETS
Two sets can be combined in many different ways.

1. Union of Two Sets:
Let A and B be sets. The union of the sets A and B, denoted by AUB, is the set that contains those elements which are contained in A or B or both.
AUB = { x | x ∈ A ∨ x ∈ B }
For example:
If A = {1, 2, 5, 8} and B = {1, 3, 5, 9},
then AUB = {1, 2, 3, 5, 8, 9}

2. Intersection of Two Sets:
Let A and B be sets. The intersection of sets A and B, denoted by A ∩ B, is the set that contains those elements which are contained in both A and B.
A ∩ B = { x | x ∈ A ∧ x ∈ B }
For example:
If A= {a, b, c, d} and B = {b, d, e, f},
then A ∩ B = {b, d}.

3. Difference of Two Sets:
Let A and B be sets. The difference of sets A and B, denoted by A - B, is the set containing those elements that are in A but not in B.
A - B = { x | x ∈ A ∧ x ∉ B }
For example:
If A = {1, 2, 3, 4, 5} and B {2, 4, 6, 8},
then A - B = {1, 3, 5} and B - A = {6, 8}.

4. Symmetric Difference Of Two Sets:
Let A and B be sets. The symmetric difference of sets A and B, denoted by A ∆ B, is the set containing those elements which are either in A or in B but not in both A and B.
A ∆ B = (AUB) - (A ∩ B)

Example No. 1:
Find A ∆ B, if A = {1, 2, 3, 4, 6} and B = {1, 3, 5, 7}
Solution:
Since A = {1, 2, 3, 4, 6} and
B = {1, 3, 5, 7},
As A ∆ B = A U B - A ∩ B
A ∆ B = {1, 2, 3, 4, 5 , 6, 7} - {1, 3}
therefore A ∆ B = {2, 4, 5, 6, 7} Ans.

5. Universal Set:
A set which contains all the sets under consideration is called a Universal Set. Usually it is denoted by U.
For example:

• The set of all students in your school is a Universal Set U.
• Subset Of universal sets:
  Different sets of students of all classes in the school such as students of 9th class and students of 10th class, etc., are all subsets of the set U of all the students of the school.

6. Complement of a Set:
Let U be a universal set and let A ⊂ U. The complement of set A, denoted by A^c or A', is the set containing those elements of U, which are not in A.
For Example:
If U = {1, 2, 3, . ,10} and A = {1, 3, 5, 7, 9), then
A' = U - A = {2, 4, 6, 8, 10} .
Also (A')' = A

OPERATIONS OF UNION AND INTERSECTION ON THREE SETS
If A, B and C are any three sets, then the following operations of union and intersection can be performed.

1. A U (B U C)
2. (A U B) U C
3. A ∩ (B ∩ C)
4. (A ∩ B) ∩ C
5. A U (B ∩ C)
6. A ∩ (B U C)
7. (A U B) ∩ C
8. (A ∩ B) U C
9. (A U B) ∩ (A U C)
10. (A ∩ B) U (A ∩ C)

A few of these operations are explained by the following examples:
Suppose A= {a, b, c}, B= {b, c, d, e}, C= {c, d, e, f, h}
(i) AU(BUC)
Solution: = {a, b, c} U ({b, c, d, e} U {c, d, e, f, h})
= {a, b, c} U {b,c,d,e,f,h}
So, AU(BUC) = {a, b, c, d, e, f, h}

(ii) (AUB)UC
Solution:
= ({a, b, c} U {b, c, d, e}) U {c, d, e, f, h}
= (a, b, c, d, e} U (c, d, e, f, h)
So, (AUB)UC = {a, b, c, d, e, f, h}

(v) AU(B∩C)
Solution:
= {a, b, c} U ({b, c, d,e) ∩ {c, d, e, f, h)
= {a, b, c} U (c, d, e)
So, AU(B∩C) = {a, b, c d, e}

(ix) (AUB) ∩ (AUC)
Solution:
= ( {a, b, c} U {b, c, d, e}) ∩ ({a, b, c} U (c, d, e, f, h})
= {a, b, d, c, d, e} ∩ {a, b, c, d, e. f. h}
So, (AUB) ∩ (AUC) = {a, b, c, d, e}

FUNDAMENTAL PROPERTIES OF UNION AND INTERSECTION FOR TWO OR THREE SETS:

(1) Commutative Property of Union: (For any two sets A and B)

A U B = B U A

For example:
If A = {a} and B = (a, b} then
A U B = {a} U {a, b} = {a, b} and
B U A = {a, b} U {a} = {a, b}
Hence A U B = B U A

(2) Commutative Property of Intersection: (For any two sets A and B)

A ∩ B = B ∩ A

For example:
If A = {a} and B = (a, b} then
A ∩ B = {a} ∩ {a, b} = {a} and
B ∩ A = {a, b} U {a} = {a, b}
Hence A ∩ B = B ∩ A

(3) Associative Property of Union: (For any three sets A, B and C)

A U (B U C) = (A U B) U C

For Example:
If A = {a}, B = {a, b} C = {a, b, c}, then
A U (B U C) = {a} U ({a, b} U {a, b, c}) = {a} U {a, b, c} = {a, b, c} and
(A U B) U C = ({a} U {a, b}) U {a, b, c} = {a, b, c}
Hence A U (B U C) = (A U B) U C

(iv) Associative Property of Intersection: (For any three sets A, B and C)

A ∩ (B ∩ C) = (A ∩ B) ∩ C

For example:
If A = {a}, B = {a, b}, C = {a, b, c} then
A ∩ (B ∩ C) = {a} ∩ {(a, b) ∩ (a, b, c)} = {a} ∩ {a, b} = {a} and
(A ∩ B) ∩ C = {(a} ∩ {a, b)} ∩ {a, b, c} = {a} ∩ {a, b, c} = {a}
Hence A ∩ (B ∩ C) = (A ∩ B) ∩ C

(v) Distributive Property of Union over Intersection: (For any three sets A, B and C)

A U (B ∩ C) = (A U B) ∩ (A U C)

(vi) Distributive Property of Intersection over Union: (For any three sets A, B and C)

A ∩ (B U C) = (A ∩ B) U (A ∩ C)

De Morgan's Laws:
Let U be a Universal Set and A, B be any subsets of U. Then
(i) (AUB)' = A'∩B'
(ii) (A∩B)' = A'UB'
These laws are known as De Morgan's Laws.

Venn Diagrams:
Sets can also be represented graphically using Venn diagrams named after the English Mathematician John Venn, who introduced their use in 1881.
In Venn diagrams the universal set U, which contains all the elements of the subsets under consideration, is usually represented by a rectangle. Inside this rectangle, circle or other simple closed geometrical figures are used to represent sets. Sometimes points are used to represent the particular elements of the set. Venn diagrams are often used to indicate the relationships between the sets.
Example:
Draw a Venn diagram to represent
U = {1, 2, 3,....,10} and A = {1, 3, 5, 7, 9}
Solution:
We draw a rectangle to indicate the universal set U. Inside this rectangle we draw a circle to represent A. Inside this circle we indicate the elements of A with points as shown below:

Explanation:
Venn diagrams can be used to show that a set A is a subset of a set B. We draw the universal set U as a rectangle. Within this rectangle we draw a circle for B. Since A is a subset of B, we draw another circle for A within the circle for B. This relationship is shown below:

In the case of operations with more than two sets, the Venn diagrams help us in proving equalities
(AUB)UC = AU(BUC) and (A∩B)∩C = A∩(B∩C)

Physics - Class X - Chapter No.2 - Fill In The Blanks and MCQs

Go To Index
MEASUREMENT

Fill In The Blanks and MCQs

Multiple Choice Questions:

1. The fundamental unit of mass in S.1. system is:______.
(a) kilogram
(b) meter
(c) gram
(d) newton

2. 10^-6 second is called a:______.
(a) nanosecond
(b) macro second
(c) microsecond
(d) millisecond

3. One kilogram is equal to:______.
(a) 100g
(b) l0g
(c) 1000g
(d) 10,000g

4. The significant figures the number 28,000 has, is/are:______.
(a) one
(b) two
(c) three
(d) four

5. The least count of a micrometer screw gauge is:________.
(a) 1mm
(b) 0.1mm
(c) 0.01mm
(d) 0.001mm

6. 10⁹ shows:______.
(a) mega
(b) giga
(c) kilo
(d) peta

7. The unit of surface area of a sphere is:_______.
(a) m
(b) m²
(c) m³
(d) m⁴

8. 2.25cm =:_____.
(a) 22.5 mm
(b) 225 mm
(c) 0225 mm
(d) 2250 mm

9. The unit of force is:_____.
(a) kilogram
(b) newton
(c) coulomb
(d) pascal

10. The significant numbers 0.002 has, is/are:_____.
(a) one
(b) three
(c) two
(d) four

11. One meter is equal to:_____.
(a) 10⁴mm
(b) 10³mm
(c) 10²mm
(d) 10⁶mm

12. 10^-9 second is called a:______.
(a) decisecond
(b) millisecond
(c) micro second
(d) nanosecond

13. The fundamental unit of length in S.I. system is:______.
(a) kilogram
(b) meter
(c) yard
(d) foot

14. The standard meter is made of this and is placed at the International Bureau of weights and Measures near Paris:_____.
(a) platinum and copper
(b) iron and copper
(c) iron and iridium
(d) platinum and iridium

15. 2.5 km+ 25 m is equal to:______.
(a) 27.5 km
(b) 27.5 m
(c) 2525 m
(d) 2525 km

16. The S.I unit of acceleration is: _____.
(a) gm/s²
(b) km/s²
(c) m/s²
(d) lm/hr

17. the least count of a micrometer screw gauge is:____.
(a) 1mm
(b) 0.1mm
(c) 0.001mm
(d) 0.01mm

18. Vernier calliper can measured length up to:_______.
(a) 1 mm
(b) 0.1 mm
(c) 0.01 mm
(d) 10 mm

19. A body has mass 5000 gm its mass in kg is: _______.
(a) 0.5 kg
(b) 5 kg
(c) 50 kg
(d) 1000 kg

20. 10 power of 9 show:_____.
(a) kilo
(b) giga
(c) mega
(d) peta

21. If two quantities are directly proportional to each other the graph b/w them will be a :_____.
(a) Circle
(b) Straight line
(c) Curve
(d) Line

22. Length, mass and time are considered to be:______ quantity.
(a) Scalar
(b) Vector
(c) Fundamental
(d) None of them

23. Random error is also called:_____.
(a) Human error
(b) Accidental error
(c) Zero error
(d) Actual error

24. 2 hours = ______.
(a) 7200 sec
(b) 120 sec
(c) 60 sec
(d) 720 sec

25. A physical balance is a device used for measuring:____.
(a) Weight
(b) Mass
(c) Volume
(d) Destiny

26. 0.00786 has number of significant figure:_____.
(a) 5
(b) 4
(c) 3
(d) 6

Fill In The Blanks:

1. In everyday life measurement or measuring device plays an important role.
2. Almighty Allah has created everything in this world with the best estimation.
3. Physical units that are derived from fundamental unit are called derived units.
4. Kilogram is a unit of mass in S.I. system.
5. If you wish to measure length with accuracy greater than 0.01 cm you would use a screw gauge.
6. The zero error of a measuring instrument can be positive or negative.
7. One meter is equal to 10³ mm.
8. 10^-9 second is called a nanosecond.
9. The fundamental unit of length in SI system is meter.
10. The standard meter is made of platinum and iridium and is placed at the international Bureau of Weights and Measures in Severe, near Paris.

Pick Out true and False:

1. The fundamental unit of time in S.I. system us minute. False
2. The S.I. unit of acceleration is meter per second per second. True
3. 1 nanosecond = 10^-8 second. False
4. Hundredth of a cm can be measured correctly with a micrometer screw gauge. False
5. A physical balance is a device used for measuring weight. True
6. The fundamental unit of length in S.I System is centimetre. False

Biology For Class IX - Chapter No.2 - Solving A Biological Problem - MCQs and Fill In the Blanks

GO TO INDEX
CHAPTER 2
SOLVING A BIOLOGICAL PROBLEM
Multiple Choice Questions

1. Encircle the correct answer:
(i) Select the correct sequence of biological method:
(a) Law → Theory → Reasoning → Hypothesis
(b) Hypothesis → Theory → Law → Reasoning
(c) Hypothesis → Reasoning → Theory → Law
(d) Law → Hypothesis → Reasoning → Theory

(ii) Select the odd one
(a) Theory
(b) Law
(c) Hypothesis
(d) Ratio

(iii) Field of research that examines mathematical representations of biological system called ________.
(a) Ratio
(b) Mathematical biology
(c) Proportion
(d) Law

(iv) Biological method involves all of the following except:
(a) Data collection
(b) Observation
(c) Experiment
(d) Proportion

(v) Scientific reasoning moves from specific to general:
(a) Inductive
(b) Deductive
(c) Observation
(d) Both a and b

(vi) Quantitative observation is the use of
(a) Senses
(b) Equipment
(c) Guess
(d) Ratio

(vii) Equation stating that two ratios are equal
(a) Ratio
(b) Proportion
(c) Guess
(d) Senses

(viii) The comparison of two values is called _______.
(a) Ratio
(b) Proportion
(c) Graph
(d) Table

(ix) What is a hypothesis?
(a) The same thing as an unproven theory.
(b) A tentative explanation that can be tested and is falsified.
(c) A verifiable observation.
(d) A fact based on quantitative data that is falsified.

(x) In data organization, which method is mostly useful?
(a) Table
(b) Graph
(c) Ratio
(d) Both a and b

11. Science is the systematic study of:
a) animals
b) plants
c) nature
d) planets

12. At the core of biology and other sciences a problem solving approach called:
a) scientific approach
b) scientific method
c) scientific Process
d) scientific experiment

13. It is a set of questions to be solved. about the natural world:
a) Biological method
b) Biological problem
c) Hypothesis
d) Reasoning

14. Female Anopheles mosquito spreads the disease of:
a) dengue
b) chikungunya
c) typhoid
d) malaria

15. The solution of biological problem starts with:
a) observation
b) hypothesis
c) reasoning
d) experiment

16. An observation that gained through the senses is called:
a) quantitative
b) qualitative
c) hypothesis
d) Both a and b

17. The name, plasmodium, was given to the tiny creature present in the blood of malaria patient by:
a) Laveran
b) Ronald Ross
c) Galileo
d) King

18. It can he defined as "the intelligent guess made by a scientist in the form of statement”:
a) Observation
b) Reasoning
c) Hypothesis
d) Law

19. Scientific reasoning moves from general to specific:
a) Inductive
b) Deductive
c) Observation
d) Both a and b

20. It is well-tested and highly reliable scientific explanation of a natural phenomenon:
a) Hypothesis
b) Observation
c) Scientific method
d) Scientific theory

21. They unify many repeated observations and data collected from lots of experiments:
a) Theory
b) Hypothesis
c) principle
d) Law

22. It is a uniform or constant fact of nature:
a) Theory
b) Hypothesis
c) Principle
d) Law

23. It is virtually an irrefutable theory:
a) Principle
b) Hypothesis
c) Law
d) None of them

24. It is responsible for spreading malaria in human:
a) Male Culex
b) Female Culex
c) Male Anopheles
d) Female Anopheles

25. A tiny creature which cause malaria:
a) plasmodium
b) Virus
c) Amoeba
d) Bacteria

Fill In The Blanks:

(i) Problem solving approach of biology and other sciences called scientific method.
(ii) Solution of biological problem starts with observation.
(iii) The key component of the scientific process is Hypothesis.
(iv) Scientific reasoning based on “if-then” statement called deductive reasoning.
(v) Final step of the scientific method is developing conclusion.
(vi) The uniform or constant fact of nature, virtually an irrefutable theory is scientific law.
(vii) Once you have the data, you may need to perform mathematical analysis.
(viii) The equation stating that two ratios are equal is called proportion.
(ix) Ratio is comparison of two values.
(x) The cause of malaria is Plasmodium.
1. Science is the systematic study of nature and how it affects us and the environment.
2. The biological method is the step wise process in which a scientist finds out the reason of any biological problem about living things.
3. An observation is a statement of knowledge gained through the senses is called qualitative observation.
4. An observation is a statement of knowledge gained through through the use of scientific equipment is called quantitative observation.
5. A hypothesis is an idea that is suggested as an explanation for a natural event, particular experience, or specific condition that can be tested through definable experimentation.
6. The deductive reasoning involves the use of “if-then” logic.
7. Result includes detailing all observations and data made during your experiment.
8. Conclusion is where all the results from the experiment are analyzed and a determination is reached about the hypothesis.
9. Theories are the well-tested and highly reliable scientific explanations of natural phenomena.
10. A scientific law is a uniform or constant fact of nature.
11. Mathematical biology is a field of research that examines mathematical representations of biological systems.
12. At the core of biology and other sciences lies a problem-solving approach called the scientific method.
13. Latin word: 'mala' means bad, and 'aria' means air.
14. In 1880, a French physician, Laveran, was made the observation that Plasmodium is present in the blood of malaria patients.
15. The intelligent guess made by a scientist in the form of statement, is called Hypothesis.
16. Deductive reasoning moves from general to specific.
17. The next step in the scientific method is to design an experiment based on reasoning.
18. The results are where you report what happened in the experiment.
19. Result verifies the hypothesis.
20. A type of test in which scientist examines blood sample of malaria patient under microscope is called experimental group.
21. A type of test in which scientist examines blood sample of healthy person under microscope is called control group.
22. Scientific theories, are well-tested and highly reliable scientific explanations of natural phenomena.
23. Mathematics plays a critical role in better understanding the natural world.

Biology For Class IX - Chapter No.1 - Introduction To Biology - Questions and Answers

GO TO INDEX
CHAPTER 1
INTRODUCTION TO BIOLOGY

Questions and Answers

Q.1: What is life?
Ans: Life cannot be defined properly, but on the basis of life processes, it can be identified through following functions of living organisms.

• Digestion
• Respiration
• Metabolism
• Movement
• Growth
• Development
• Excretion
• Irritability
• Reproduction

Q.2: Define Biology?
Ans: Biology:
The word biology comes from Greek language “Bios” meaning “life” and “Logos” meaning “thought or reasoning”. Thus biology meaning study of life.

"Biology is a branch of natural sciences which deals with the study of living beings. It provides the knowledge about living organisms which differ from each other in shape, size, composition etc."

Q.3: Name and define main divisions of biology?
Ans:MAIN DIVISIONS OF BIOLOGY
There are three major divisions of biology:

1. Zoology:
   The word Zoology is derived from Greek language, “Zoon” meaning animals and Logos meaning “study or knowledge”. It deals with the study of animals.
   
   
2. Botany:
   The word Botany is taken from Greek language, “Butane” meaning plants and Logus meaning “study or knowledge”. It deals with the study of plants.
   
   
3. Microbiology:
   It deals with the study of microscopic organisms such as Bacteria etc, which can be seen only with the help of microscope.

Q.4: Define branches of biology?
Ans: BRANCHES OF BIOLOGY:
Modern biology deals with the structure, function and many other descriptions of living things. Advance research during the 20th Century has led to the division of biology into specialized branches. Some important branches are defined below:

1. Morphology (Gr. morph; form, logos; discourse):
   The study of external form and structure of organisms.
   
   
2.  Anatomy (Gr. ana; part/up, tome; cutting):
   The study of internal parts of body of living organisms by cutting them open.
   
   
3. Cell biology (L. cells, compartment, Gk. Bios= life; logos; discourse):
   The study of cell and its organelle.
   
   
4. Histology (Gr. histos: tissue; logos, discourse):
   The study of structure of tissues of plant and animals.
   
   
5. Physiology (Gr. physis; nature, logos, discourse):
   The study about functions of living organisms.
   
   
6. Taxonomy (Gr. taxis, arrangement, nomos: name):
   The study of the rules, principles, grouping and naming the living organisms.
   
   
7. Genetics (Gr. genesis; descent, origin):
   The study of heredity, that is transferring of characters from parents to offspring.
   
   
8. Developmental biology (Gr. embryon; embryo, logos, discourse):
   The study of formation and development of embryo.
   
   
9. Environmental biology:
   The study of relationship between living organisms and non-living factors of environment and their effects on each other.
   
   
10. Paleontology (Gr. palaios; ancient, ontos; being, logos: discourse):
    The study of remote past organic life, with the help of fossils.
    
    
11. Biotechnology:
    The study about techniques for manipulation of gene to bring the changes in structure and location of genes to achieve desirable characters is called biotechnology.
    
    
12. Socio-biology (L. sociare; to associate,):
    The study of social behavior of living organisms. i.e interaction between themselves.
    
    
13. Parasitology (Gr. para; up):
    The study of parasites.
    
    
14. Pharmacology (Gr. pharmakon, drug;):
    The study about action of drugs.
    
    
15. Molecular biology:
    The study of organic molecules which constitute cell and its organelles.

Q.5: Describe the relationships of biology to other sciences?
Ans: Relationship Of Biology To Other Sciences:
Biology is a multidimensional subject and linked with other sciences. For example, the movement of animals follows the laws of motion in physics. Biology is considered as interdisciplinary science, which is related with other sciences. Some of these are mentioned below:

1. Biophysics:
   It is a branch of physics, in which laws and techniques of physics are applied to explain the processes of life.
   Example:
   * The radio-physics branch where radioactive isotopes are used to trace the translocation of different materials within the organisms.
   * Radio-labeling and carbon-dating also show some uses of radioactive isotopes in determining the age of fossils.
   * Uses of sound waves as ultrasound and laser technology show relation of physics with biology.
   
   
2. Biomathematics / Biometry:
   The branch of mathematics which collects data of living organisms using mathematical techniques and tools is called Biometry or Biomathematics.
   Example:
   It plays very important role in research.
   
   
3. Biochemistry:
   It is branch of biology which deals with the study of molecules which form living organisms or cell and requires authentic knowledge about biology and chemistry to explain the synthesis of biomolecules and function of different molecules in the body of an organism.
   Example:
   The study of basic metabolism of photosynthesis and respiration involves the knowledge of chemistry.
   
   
4. Biogeography:
   It deals with the distribution of different living organisms in different geographical regions of the world.
   Example:
    Many living organisms are restricted to particular geographical regions due to environmental conditions.
   
   
5. Bio-economics:
   This deals with the economically important organisms involved in production.
   Example:
   Meat production, etc. are calculated for cost value and profit value.

Q.6: What professions or fields can biology students adopt as their career? Or Write a note on Career in biology? Or Describe the careers That the students, Who have chosen biology, can plan to adopt?
Ans: Careers in biology:
The career of student is subject to obtain a degree. The students, who have chosen the biology, they can plan to adopt some as a career in following fields:

1. Medicine and Surgery:
   Medicine deals with diagnosis and treatment of diseases and surgery deals with repair, replacement or removal the affected organ.
   
   
2. Agriculture:
   This deals with production of varieties of crops, fruit, vegetables, dairy products, etc. Pakistan being an agricultural country, it can play very important role.
   
   
3. Horticulture:
   This is also part of agriculture, in which work is carried out for the development of new varieties of plants and their products.
   
   
4. Forestry:
   Forests are the source of biodiversity of plants and animals of many kinds which live there. It is important in development of new forests as well as preservation of existing ones.
   
   
5. Farming:
   In this profession, the development of different kinds of farms takes place, such as fish farm, cattle farm, poultry farm, etc. New technologies are used for the production of animals as source of meat and milk, leather, wool, etc.
   
   
6. Animal husbandry:
   This profession is part of agriculture science. It deals with the care and breeding of animals which are beneficial for man.
   
   
7. Fisheries:
   This profession deals with the increased quantity and quality of fish production. Fish is one of the best source of protein.
   
   
8. Biotechnology:
   This is very important and sensitive profession. It deals with manipulation of gene to produce valuable chemical products, such as insulin, growth hormones, interferon, etc from bacteria as well as others.

Q.7: Write down the Quranic verses to explain about the origin of life and about growth and development of plant? OR
Write down the Quranic verse about the following:
(i) The Significance Of Water For Plants And Animals
(ii) Facts About The Growth And Variety Of Plants
Ans: QURANIC VERSES ABOUT THE ORIGIN OF LIFE:
The Almighty Allah has conveyed a great knowledge about the origin and characteristics of animals and plants through our Holy Book, the Quran. A few of Ayah are quoted as under:

The Holy Quran Has Explained The Significance Of Water For Plants And Animals At Several Places:
Allay Says;

“We made every living thing from water”.
(Surah: Ambia, Verse: 30)

“And Allah has created every animal from water of them there are some that creep on their bellies, some that walk on two legs; and some that walk on four. Allah creates what He will Lo! Allah is able to do all things.”
(Surah Al-Nur, Ayah-45)

Here water is symbolized with the protoplasm as the basis of life and the vital power of protoplasm seems to depend on the constant presence of water.

QURANIC VERSES ABOUT THE PLANT"S GROWTH AND DEVELOPMENT:
The Glorious Holy Quran Has Also Revealed Some Facts About The Growth And Variety Of Plants:

“And in the earth are neighboring tracks, vineyards and ploughed lands, and date-palms, like and unlike which are watered with one water. And we have made some of them to excel others in fruit. Lo! Here in verily are portents for people who have sense.”
(Surah: Al-Ra'd, Ayah: 4) 

Here Allah has revealed some facts about plant growth and development.

Q.8: Describe the role of Muslim scientists in the field of biology.
Ans: Contribution of Muslim Scientists:
The Muslim scientists have played great role in the development of biological science. They began experiments and observations from the first Century of Hijra. Following are some details about the important Muslim scientists, who made significant contribution towards the development of biology.

1. Jabir Bin Hayan:

• Period: He was born 722 and died in 817 A.D.
• Birth Place: He was born in Iran
• Contribution: He worked in the field of chemistry.
• Famous Books: He also wrote a number of books on plants and animals. Like:
  (i) “Al-Nabatiat” on plants.
  (ii) “Al Haywan” on animals.

2. Abdul Malik Asmai:

• Period: He was born 741 and died in 828 A.D.
• Contribution: He was great zoologist.
• Famous Books: He wrote many books on animals. Like:
  (i) “Al Kheil” on horse.
  (ii)“Al-Ibil” on camels.
  (iii)“Al-Shat” on sheep.
  (iv) “Al-Wahoosh” on wild animals and
  (v)“Khalqul Insan” on the different parts of human body and their functions.

3. Bu Ali Sina :

• Period: He was born 980 and died in 1037 A.D.
• Founder of Medicine: He was greatest of all the Muslim scientists and considered as the founder of medicine. He is called as Avicenna in the west.
• Contribution: He identified many diseases like tuberculosis, meningitis and other such inflammations.
  He also worked in the field of mathematics, astronomy, physics, paleontology and music.
• Famous Books: He wrote books like:
  (i) “Al-Qanoon” and
  (ii) “Fil Tib Al-Shafa”.

Q.9: Describe the level of organization. Or Illustrate level of organisation?
Ans: Level Of Organization
The levels of organization in living world are based on chemical foundation. All the living organisms are made up of cells and the protoplasm of cell is the physical as well as chemical basis of life. These levels are as follows:

1. Atomic level of organization:

• All the matter is made up of elements, which is composed of atom (a: not, tom: cut).
• Each atom is made up of sub-atomic particles, such as electrons, protons and neutrons.
• In nature, there are more than 100 kinds of elements and among these 16 elements are called as bio-elements, which are vital for life.
• Only six elements such as C, H, O, N, S and P are called basic elements of life.

2. Molecular level of organization:

• Molecules are formed by the binding of atoms.
• These organic molecules of cells are called as bio-molecules.
• These are constructed in great variety and complexity.
• They are classified as micro-molecules and macro molecules.
• Glucose, amino acid and fatty acids are micro-molecules.
• Carbohydrates, proteins and lipids are macro-molecules.
• The units of micro-molecules combine together to form macro-molecules.

3. Cellular level of organization:

• The bio-molecules when work together in the form of suspension, It is called Protoplasm.
• Protoplasm is the combination of organic and specific inorganic substances.
• When protoplasm work in the form of a unit, this is called Cell.
• Cell is the basic unit of living organisms.
• When similar type of cells organize together in a group, called tissues.
• The different types of tissues arranged in a particular manner to work together are called Organs.
• Organs of different types work in a co-ordinated manner to perform a function are called Organ-system.
• When different organ-system function in co-ordination in as a unit, they form a body or Multicellular Organism.

4. Taxonomic level:

• Taxonomic level is another level of organization which is related with living organisms.
• The Species is the smallest unit of taxonomic level of organization, which includes morphologically similar living organisms which inter-breed and produce fertile offspring.

5. Population level:

• All the members of a species, living in specific habitat are called Population.
• For example, A group of parrots living on tree, is called parrot population.

6. Community level:

• The members of different species living in specific habitat are called as Community.
• For example, A group of different kind of birds, living on tree, is called as bird community.

7. Ecological system:

• Communities always depends upon their non-living environment in a reciprocal interaction for their survival.
• For example, oxygen for respiration is obtained from environment and in turn given out CO₂ .
• This interaction of living organisms with each other and with non-living of the environment is called Ecosystem or Ecological system.

8. Biosphere level:

• The part of earth where life exists is called biosphere.
• It consists of different kinds of Eco-systems.

Graphical Representation Of Level Of Organisations:

Q.10: What do you mean by Unicellular organizations and Colonial Organization?
Ans: Unicellular Organizations:
Definition: All the microscopic organism which can not be seen by naked eyes and consist of single cell are called Unicellular (uni = one cellular = cell) organism.

• All single cell organisms carry out all activities of life.
• They digest the food, respire, excrete, move etc on the cellular base by simple methods.
• Unicellular organism also respond to their environments, get rids of waste, grow and reproduce.
• Unicellular organisms include both prokaryotes and some eukaryotes.
• Examples: Bacteria, Amoeba, Paramecium and Euglena are common examples of unicellular organisms.

Colonial Organization:
Definition: Many unicellular organisms live together by forming colonies but do not have any division of labor among them. Such Organisms are called Colonial organism.

• In colonial type of cellular organization, each unicellular organism lives its own life.
• They are not dependent on each other and never form any multicellular structure.
• Example: Volvox is a green alga is an example of colonial form of organization.

Q.11: Describe the characteristics of Amoeba and draw a well labeled diagram also?
Ans: Amoeba:
Amoeba is a unicellular, microscopic and aquatic Eukaryote organism.
Habitat:
Amoeba is found in the mud of shallow pond, pools and at any stagnant water.
Size:
Its size is about 0.25 mm.
Shape:
Amoeba has an irregular shape i.e., no permanent shape and keep on changing.
Structure:
Amoeba is very simple in structure. It is made up of protoplasm. The protoplasm is surrounded by a membrane called cell membrane which helps in movement of molecules and protects cytoplasm. Protoplasm consist of two parts.

1. Cytoplasm
2. Nucleus

1. Cytoplasm:

• Cytoplasm is differentiated into two portion.
  Ectoplasm: The outer part of cytoplasm is clear (non granular) and transparent, called ectoplasm (gel) and
  Endoplasm: The inner part of cytoplasm which is viscous, granular and translucent is called endoplasm (sol).
  
  
• The cytoplasm contains following organelles:
  Contractile vacuole: It removes excess water from bodty.
  Food vacuoles: It contains food particles. 
  Mitochondria: It is a power house of the cell.
  Pseudopodia (Psuedo = false, podia = a feet): Amoeba captures food particles with the help of psuedopodia. Psuedopodia also help in locomotion.

2. Nucleus:
It is usually present in the center but as Amoeba moves,the nucleus changes its position. Nucleus controls all the activities of a cell.

Respiration:
Amoeba respires by exchanging gases with the surrounding water through its surface.

Q.12: Describe the characteristics of Volvox and draw a well labelled diagram also?
Ans: Characteristics Of Volvox:
Volvox is a polyphyletic (many ancestors) genus of chlorophyte green algae in the family Volvocaceae.  It forms spherical colonies of upto 50,000 cells.
Habitat:

• They live in a variety of fresh water habitats and were first reported by Antonie Van Leeuwen Hoek in 1700.
• Volvox once called algae that live together in a colony.

Volvox are not harmful to humans because they do not produce any toxic substance.

Structure:

• Volvox is a unicellular organism. The cell has a nucleus, vacuoles and an eyespot.
• Each cell performs all the metabolic functions independently such as respiration, photosynthesis, excretion, etc.
• Movement: Each Volvox cell has two flagella. The flagella beat together to roll the body in water.

Nutrition:
Volvox cells have chlorophyll and make their own food by photosynthesis. These photosynthesis organisms are an important part of many aquatic ecosystem.

Q.13: Define multicellular Organization?
Ans: Multicellular Organization:
The organism formed by many cells is called as multicellular organism. Frog and mustard plant are examples of multicellular organization.

Q.14: Describe characteristics of Mustard plant? Also draw a well labeled diagram of Mustard plant?
Ans:Characteristics Of Mustard plant (Brassica):
Brassica campestris is commonly known as mustard plant and locally it is called “Sarsoon”.
It is multicellular and cultivated in winter season.
Size:
The length of this plant is 1 to 1.5 meter.
Structure:
This plant consists of following two parts:

• The vegetative part: which consists of root, stem and leaves.
• Reproductive part: which consists of flowers. Each flower is yellowish in color and produce seed.

Economical Importance:

• The leaves of this plant are used as vegetable.
• Seeds are used for oil extraction.

Q.15: Describe characteristics of frog? Also draw a well labeled diagram of Frog?
Ans: Morphology of Frog:

• Rana tigrina is the scientific name of spotted frog found commonly in our region.
• It is multicellular animal.
• It belongs to class Amphibians because it lives in both water as well as on land.
• Frog lives near ditches, pools, ponds, stagnant stream and slow moving rivers.
• Its body is divided into head, trunk and limbs. There is no neck and no tail.
• Bulging eyes are present on the conical head on either side.
• Each fore limb has four fingers while there are five fingers in hind limbs.
• Tympanic membrane in the form of circular area is present just behind each eye and help in hearing.
• External nostrils are present at the tip of mouth for breathing.
• Frog swims in water with the help of foot- web present in between the fingers of hind limbs.
• Its body is made of well developed organ system with different organs. For example, digestive system, circulatory system, respiratory system, excretory system, reproductive system and nervous system.
• All organs are made of different tissues such as epithelial, glandular, muscular, nervous etc.
• It feeds on small insects.
• Its skin is moist and glandular which make it slippery.
• Frog lays egg in water during rainy season.
• Frog hibernate during winter by burying themselves in the mud and live there throughout the winter. This phenomenon is called "Winter-sleep" or "Hibernation".

Q.16: Describe the procedure of dissection of frog and draw a well labelled diagram of dissected frog? OR Identify organs and organ systems in dissected frog?
Ans: IDENTIFICATION OF ORGANS AND ORGAN SYSTEMS OF DISSECTED FROG:
 Material Required:

• Preserved frog
• dissecting tray
• dissection box
• pins

Procedure:

• Place the preserved frog on a dissecting tray on its back, as all vertebrates are dissected ventrally.
• Pin down the fore limbs and hind limbs.
• Take scissor to cut the abdomen ventrally, from cloaca to the mouth.
• Again cut down the skin of limbs from each side and pin down.
• Expose the visceral organs clearly to observe organs.

Q.17: Draw a table to show different organs with relative organ system? And draw well labelled diagram of each system?
Ans: Different Organs With Relative Organ Systems:

Organ System	Organs
Digestive system	Alimentary Canal: Mouth, buccal cavity, Pharynx, Esophagus, stomach, small intestine (Duodenum, Ileum) , large intestine, cloaca, cloacal aperture. Glands: liver with gall bladder and pancreas.
Circulatory system	Heart, left and right atria, left and right ventricles, truncus arteriosus, Aortae, Vena cavae
Respiratory system	i. Buccal: Lining of mouth ii. Cutaneos: Moist Skin iii. Pulmonary: Lungs,nostrils, laryngo-tracheal chamber, bronchi, Alveoli
Excretory system	Kidneys, Ureter, Urinary Bladder, Cloacal aperture
Reproductive system	Fat bodies  Male: Testes, vasa efferentia, urinogenital dust  Female: Ovaries, Oviduct, Ovisac
Nervous system	Brain, Spinal Cord, Nerves

ALL SYSTEMS OF FROG

Digestive System Of Frog

Capturing Of pray

Buccal Cavity 

Digestive System (Alimentary Canal)

Circulatory System Of Frog

Heart Of Frog

Arterial System Of Frog

Venous System Of Frog

Respiratory System Of Frog

Reproductive System Of Frog

Note: In male frog, reproductive and excretory system is combined into one system called the urogenital system.

Nervous System Of Frog