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BIOLOGY - New Book
For 9th Class
Most Important MCQs Sindh Board
By Ustani G(YouTube Channel)
Chapter No.1: Introduction to Biology
1. ____ is the study of science that deals with the study of living beings:a. Chemistry
b. Biology
c. Mathematics
d. History
2. _____ is the study of external characteristics of living organisms:
a. Anatomy
b. Cytology
c. Morphology
d. None of these
3. The branch of biology that deals with the study of fossils and their types is termed as:
a. Socio biology
b. Pharmacology
c. Taxonomy
d. None of these
4. The branch of biology that deals with the identification, naming and classification of living organisms is called:
a. Taxonomy
b. Paleontology
c. Histology
d. All of these
5. ____ is the smallest unit of classification in taxonomic level:
a. Genus
b. Species
c. Order
d. Family
6. In a particular area, bat population, rabbit population, cat population and human population together make:
a. Biosphere
b. Ecosphere
c. Specie
d. Community
7. A region of earth where life exist is called:
a. Ecosystem
b. Biosphere
c. Habitat
d. All of these
8. Branch of mathematics which collects data of living organisms is called _____.
a. Biometry
b. Statistics
c. Biophysics
d. All of these
9. ____ constitutes the smallest level of organization:
a. Atomic
b. Cellular
c. Molecular
d. None of these
10. ____ is the basic unit of living organism:
a. Tissue
b. Organ
c. Cell
d. Organ system
Chapter No.2: Solving a Biological Problem
1. ____ is the first step to solve biological problem:a. Observation
b. Hypothesis
c. Theory
d. Law
2. ___ is the cause of Malaria:
a. Euglena
b. Amoeba
c. Plasmodium
d. Rana tigrina
3. Intelligent guess by scientist in the form of statement is termed as:
a. Observation
b. Hypothesis
c. Theory
d. Law
4. ____ reasoning moves from specific to general:
a. Inductive
b. Deductive
c. Both of these
d. None of these
5. _____ is a practical performance on the basis of present facts and figures:
a. Theory
b. Law
c. Experimentation
d. None of these
6. _____ verifies that either hypothesis is true or not.
a. Result
b. Theory
c. Law
d. Observation
7. is uniform or constant fact of nature:
a. Theory
b. Law
c. Hypothesis
d. Observation
8. ____ is an irrefutable theory:
a. Law
b. Theory
c. Observation
d. Hypothesis
9. ______ is used to explain “if.... And then” statements:
a. Law
b. Observation
c. Reasoning
d. Conclusion
10. Malaria is spread through _____.
a. Aedes mosquito
b. Female Anopheles mosquito
c. Tsetse fly
d. All of these
Chapter No. 3: Biodiversity
1. Degree of variation within or among the species is called:a. Biotechnology
b. Biodiversity
c. Socio biology
d. None of these
2. _____ is the branch of biology that deals with the classification of living organisms:
a. Limnology
b. Taxonomy
c. Physiology
d. Geology
3. Organs which are similar in structure but different in functions are called:
a. Analogous organs
b. Homologous organs
c. Paralogous organs
d. None of these
4. ____ was the first to classify living organisms:
a. Linnaeus
b. Aristotle
c. Mayr
d. None of these
5. ____ gives the concept of Binomial Nomenclature:
a. Lodhi
b. Mayr
c. Robert whittaker
d. None of these
6. In five kingdom classification, only Prokaryotes are placed in group:
a. Plantae
b. Animalia
c. Fungi
d. Monera
7. Hyphae are the characteristic feature of:
a. Algae
b. Fungi
c. Monera
d. None of these
8. The Botanical (Biological) name of onion is:
a. Rana tigrina
b. Musca domestica
c. Alium cepa
d. None of these
9. The scientific name of Human is:
a. Alium cepa
b. Rana tigrina
c. Musca domestica
d. Homo sapiens
10. ____ is the cutting down of forest.
a. Afforestation
b. Biotechnology
c. Deforestation
d. Reforestation
Chapter No. 4: (Cell and Tissues)
1. ___ is used as source of illumination in light microscope.a. Electron beam
b. UV Rays
c. Visible light
d. None of these
2. ___ means increasing size of an object:
a. Magnification
b. Resolution
c. Capacitation
d. All of these
3. Cell theory was proposed by:
a. Watson and crick
b. Singer and Nicolson
c. Schleiden and schwann
d. None of these
4. Bacteria and cyanobacteria are the examples of :
a. Eukaryotes
b. Plants
c. Fungi
d. Prokaryotes
5. it does not contain membrane bounded organelles.
a. Eukaryote
b. Prokaryote
c. None of these
d. All of these
6. Plastids are not present in:
a. Animal cell
b. Plant cell
c. Present in both
d. None of these
7. Which one of the following is a living component?
a. Cell wall
b. Cell membrane
c. Both are living
d. Both are non living
8. It is the movement of molecules from higher concentration to lower concentration.
a. Diffusion
b. Osmosis
c. Active transport
d. None of these
9. Eukaryotic cell contain DNA in:
a. Nucleus
b. Cytoplasm
c. Cytosol
d. All of these
10. It is called power house of cell.
a. Nucleus
b. Cytoplasm
c. Mitochondria
d. Ribosome
11. It is called Protein factories of cell.
a. Ribosome
b. Mitochondria
c. Cytoskeleton
d. Plastids
12. When epithelium is composed of single layer it is called:
a. Compound
b. Simple
c. Both
d. None of these
13. They are soft connective tissues which have composition almost similar to bone:
a. Cartilage
b. Bone
c. Both of these
d. None of these
14. They have ability to contract and relax.
a. Muscular
b. Connective
c. Nervous tissues
d. Skeletal
15. In plants these tissues have ability to divide and re divide:
a. Permanent
b. Meristematic
c. Ground
d. Supporting
16. Root hairs and stomata are present in:
a. Ground
b. Epidermal
c. Permanent
d. Supporting
Chapter No. 5: (Cell Cycle)
1. These are the thread like structures which appears during cell division.a. DNA
b. Ribosomes
c. Chromosomes
d. All of these
2. Chromosomes with unequal arms are called:
a. Metacentric
b. Sub metacentric
c. Acrocentric
d. Telocentric
3. Type of cell division in which parent cell divides into two daughter cells with similar number of chromosomes is called:
a. Meiosis
b. Amitosis
c. Necrosis
d. Mitosis
4. Non dividing phase between two successive cell divisions is called:
a. Metaphase
b. Telophase
c. Interphase
d. All of these
5. Nuclear membrane is disappeared and uncoiling of chromosomes takes place during:
a. Metaphase
b. Anaphase
c. Telophase
d. None of these
6. Chromosomes are arranged in mid-line of cell during:
a. Prophase
b. Metaphase
c. Anaphase
d. Telophase
7. Contraction of chromosomes towards their respective poles occurred at:
a. Metaphase
b. Telophase
c. Anaphase
d. None of these
8. Division of cytoplasm is called:
a. Karyokinesis
b. Cytokinesis
c. None of these
d. All of these
9. Pre programmed cell death is called:
a. Necrosis
b. Apoptosis
c. None of these
d. Both of these
10. It is also called as reduction division:
a. Mitosis
b. Meiosis
c. Necrosis
d. All of these
11. Leptotene, Zygotene, Pachytene are the sub stages of:
a. Mitosis
b. Meiosis
c. Apoptosis
d. None of these
12. Chiasmata formation takes place during:
a. Leptotene
b. Pachytene
c. Diplotene
d. None of these
13. Bivalent tetrads formed during:
a. Pachytene
b. Diakinesis
c. Leptotene
d. None of these
14. Crossing over in meiosis takes place during this sub stage:
a. Pachytene
b. Diakinesis
c. Diplotene
d. Leptotene
15. This type of cell division is responsible for variations among living organisms:
a. Mitosis
b. Meiosis
c. Necrosis
d. Apoptosis
16. It is responsible for growth, repair and healing of wounds tissues:
a. Mitosis
b. Meiosis
c. Necrosis
d. None of these
Chapter No. 6: (Enzymes)
1. It is considered as Biocatalyst:a. Enzyme
b. Hormone
c. Protein
d. All of these
2. Enzyme itself does:
a. Not utilized during the chemical reaction
b. Utilized during the chemical reaction
c. Fertilized during chemical reaction
d. Homogenized during chemical reaction
3. Enzymes work:
a. Randomly
b. Specifically
c. Selectively
d. None of these
4. It inhibits the enzyme activity:
a. Activator
b. Inhibitor
c. Moderator
d. Transformer
5. Best performance of enzymes are observed at:
a. Increased pH and Temperature
b. Decreased pH and Temperature
c. Optimum pH and Temperature
d. Work at any pH and Temperature
6. Increasing the temperature more than optimum range, the activity of enzyme is:
a. Decreased
b. Increased
c. Remains same
d. No change will be observed
Chapter No. 7: (Bioenergetics)
1. The study of energy relationships, energy transformation and transmission is called:a. Biotechnology
b. Bio sociology
c. Bioenergetics
d. Biometry
2. It is considered as energy currency in living organisms:
a. RNA
b. DNA
c. ATP
d. Ribosome
3. The amount of energy in one molecule of ATP is:
a. 733 Kcal/mol.
b. 7.3 Kcal/mol.
c. 73 Kcal/mol.
d. 0.73 Kcal/mol.
4. These are the reactants of Photosynthesis:
a. Glucose and water
b. Carbon dioxide and water
c. Carbon dioxide and glucose
d. Oxygen and glucose
5. It is the site of Photosynthesis:
a. Chloroplast
b. Ribosome
c. Mitochondria
d. None of these
6. ATP and NADPH are synthesized during:
a. Light reaction
b. Dark reaction
c. Both of these
d. None of these
7. C3-cycle occurs during:
a. Light reaction
b. Dark reaction
c. Both of these
d. None of these
8. ATP is formed as a result of:
a. Photosynthesis
b. Respiration
c. Fertilization
d. Pollination
9. It take places in the absence of oxygen:
a. Aerobic respiration
b. Anaerobic respiration
c. Alcoholic fermentation
d. Both b and c
10. Type of anaerobic respiration in which ethanol is produced is called:
a. Lactic acid fermentation
b. Alcoholic fermentation
c. Both of these
d. None of these
11. Type of anaerobic respiration in which lactic acid is produced is called:
a. Lactic acid fermentation
b. Alcoholic fermentation
c. Both of these
d. None of these
12. No. of ATPs produced during Aerobic respiration are:
a. 34
b. 35
c. 36
d. 37
13. The products of Respiration are:
a. Glucose and oxygen
b. Carbon dioxide water and energy
c. Carbon dioxide and water
d. None of these
14. Glycolysis is the splitting of:
a. Sugar
b. Water
c. Carbon dioxide
d. Oxygen
15. What are the number of carbon in pyruvic acid:
a. 1
b. 2
c. 3
d. 4
16. Respiration takes place in:
a. Chloroplast
b. Ribosome
c. Mitochondria
d. None of these
17. It takes place in chlorophyll containing organisms only:
a. Photosynthesis
b. Respiration
c. Both of these
d. None of these
18. Chemical energy is converted into ATP during:
a. Respiration
b. Photosynthesis
c. Both of these
d. None of these
19. In this process, light energy is converted into chemical energy:
a. Respiration
b. Photosynthesis
c. Both of these
d. None of these
Chapter No. 8 (Nutrition)
1. It is a type of nutrition in which living organism prepares its own food:a. Heterotrophic nutrition
b. Autotrophic nutrition
c. Both of these
d. None of these
2. Mode of nutrition exhibited by humans and other animals:
a. Heterotrophic nutrition
b. Autotrophic nutrition
c. Chemotrophic nutrition
d. None of these
3. A type of nutrition in which living organism obtains food by harming other and on the expense of host is called:
a. Parasitic nutrition
b. Saprotrophic nutrition
c. Holozoic nutrition
d. All of these
4. They derive their food from dead organic matter:
a. Holozoic animals
b. Saprotrophes
c. Parasites
d. Omnivores
5. Digestion in man starts from:
a. Mouth
b. Stomach
c. Intestine
d. Rectum
6. It is organ where most of the digestion takes place:
a. Rectum
b. Stomach
c. Mouth
d. None of these
7. It is long passage that extends from pharynx to stomach:
a. Trachea
b. Oesophagus
c. Intestine
d. All of these
8. It kills the microorganism inside the stomach:
a. Sulphuric acid
b. Hydrochloric acid
c. Nitric acid
d. All of these
9. Duodenum is the part of:
a. Large intestine
b. Stomach
c. Small intestine
d. None of these
10. Microscopic villi are the part of:
a. Small intestine
b. Large intestine
c. Stomach
d. Trachea
11. Pepsin is present in:
a. Stomach
b. Large intestine
c. Small intestine
d. None of these
12. Absorption takes place in:
a. Stomach
b. Small intestine
c. Large intestine
d. None of these
13. The bile juice produced in:
a. Pancreas
b. Liver
c. Brain
d. Stomach
14. Colon and caecum are the part of:
a. Small intestine
b. Large intestine
c. Ear
d. Esophagus
15. Pepsin digests:
a. Protein
b. Fats
c. Carbohydrate
d. All of these
Chapter No. 9: (Transport)
1. Loss of water through stomata is called:a. Transpiration
b. Guttation
c. Transportation
d. Active transport
2. In plants, water is transported through:
a. Phloem
b. Xylem
c. Cortex
d. All of these
3. It is a type of circulatory system in which blood is flows through vessels:
a. Open type circulatory system
b. Close type circulatory system
c. Both of these
d. None of these
4. It is considered as fluid connective tissue:
a. Lymph
b. ECF
c. Blood
d. Hormones
5. 90% of plasma is:
a. Water
b. Ions
c. Dissolved susbatnces
d. All of these
6. Another name for White blood corpuscle is:
a. Adipocyte
b. Leukocyte
c. Erythrocyte
d. Chondrocyte
7. Oxygen transport is the carried out by:
a. Leukocyte
b. Erythrocyte
c. Adipocyte
d. None of these
8. They contain fibrinogen which helps in clotting of blood:
a. Plasma
b. Globulin
c. Platelets
d. None of these
9. Pulmonary vein contains:
a. Deoxygenated blood
b. Oxygenated blood
c. Cleaned blood
d. Blood with ECF
10. All the arteries contain oxygenated blood except:
a. Renal artery
b. Pulmonary artery
c. Hepatic artery
d. All of these
11. Largest artery of the body is:
a. Systemic aorta
b. Vena cava
c. Sinus venosus
d. None of these
12. They help in defence mechanism of the body:
a. Erythrocytes
b. Leukocytes
c. Adipocytes
d. All of these
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