Biology For Class X (Science) - Guess Papers 2024 - By Sir Sajjad Akber Chandio

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Class X (Science)
Biology II
Guess paper 2024

By Sir Sajjad Akber Chandio
Note: Cover MCQs (MULTIPLE CHOICE QUESTION - 12Marks) by reading chapters from text book; model papers and past year papers.

SECTION “B”
(SHORT ANSWER QUESTIONS) (Marks 24)

Time Duration 2½  hours
NOTE: Answer any 10 questions from this section. Each question carries 03 marks. Answer should be clear and according to need. No extra detail is required.
Q.1: Difference between:

• Inspiration and expiration
• Cartilage and bone
• Photosynthesis and respiration
• Asexual and sexual reproduction
• DNA and RNA

Q.2: Define the following:
Homeostasis , myopia , color-blindness , hyper myopia, transpiration guttation, double fertilization, spermatogenesis, oogenesis, homologous chromosomes, allele, dominant allele, stimuli response, genes, heredity inheritance, budding & vegetative propagation, Hyperopia.

Q.3: Diagrams:

• Reproductive organ of male & female rabbit
• A fruit formation
• Nephron
• Structure of pollen grain
• Male gametophyte
• Diagram of ovule
• TS of angiospermic flower 
• Hinge & ball and socket joint
• Human ear and
• Nitrogen cycle

Q.4: Define feedback control mechanism of hormonal secretion.
Q.5: Disorder of nervous system
Q.6: Describe the structure of neuron along with diagram.
Q.7: What is artificial ventilator?
Q.8: Explain Osmoregulation in terrestrial organism?
Q.9: What are the main aspects of homeostasis?
Q.10: What are the excretory organs in man?
Q.11: How reflex action work by reflex arc? 
Q.12: What are the main functions of skeleton. OR
Q.13: Law of Independent assortment showing dihybrid cross.
Q.14: Express with the help of checker board Expected ratio in Dihybrid Cross.
Q.15: Role of Joseph Lister in antiseptic and role of Fleming in antibiotics.
Q.16: Write down the uses of sedatives.
Q.17: Define Homeostasis, What are excretory organs in man?

Q.18 Reasons:

• Why addiction is considered as harmful condition?
• How do bacteria produce antibiotic resistance?
• Why driving licensee is not issued to color blind person?
• Why the nervous control is faster than chemical control?
• Why thyroid gland swells up give name of disease?
• Why homeostasis is required?
• Why stomata generally open during day time?

Q.19: Short notes:

• Acid rain
• Deforestation
• Greenhouse effect
• Stomata

Q.21: Name and define common types of Arthritis.
Q.22: Writ about artificial ventilator

SECTION “C”
(DETAILED ANSWER QUESTIONS) (Marks 24)

NOTE: Attempt any Four questions from this section. Each question carries 06 marks.
Q.1: Describe abiotic factor and biotic factor of ecosystem.
Q.2: Describe the structure of human brain.
Q.3: Describe the osmotic adjustment in plant. 
Q.4: How skin work as thermoregulatory organ?
Q.5: Explain the types of muscles along with diagram.
Q.6: Describe the theory of natural selection (Darwinism).
Q.7: Define biotechnology & describe the scope and importance of biotechnology. 
Q.8: Describe the disorder of bones and their cause (rickets osteoporosis, arthritis its types and causes of arthritis).
Q.9: What is germination? Give the condition of germination also describe methods of different germination (Epigeal and hypogeal).
Q.10: Describe nitrogen cycle as biogeochemical.
Q.11: Describe the mode of vaccine.
Q.12: Describe disorders of respiratory system.
Q.13: Draw a neat and Labelled diagram of Stages of fruit formation.

For Complete Biology Class X notes CLICK HERE