Biology MCQs from latest book edition

Biology MCQs from the latest book edition

1. Plants increase proportion of __________ while responding to cold stress:
A. Amino acids
B. Nucleic acids
C. Unsaturated fatty acids
D. Saturated fatty acids

Answer - Click Here:
C

2. In science, the current number of species of organisms is:
A. 2500000
B. 25000000
C. 2500
D. None of these

Answer - Click Here:
B

3. What are those animals called in which body temperature tends to fluctuate more or less when air or water temperature changes?
A. Poikilotherms
B. Heterotherms
C. Homeotherms
D. Endotherms

Answer - Click Here:
A

4. In biological method, which one is the correct sequence?
A. Hypothesis->observation->deduction->testing of deduction
B. Law->theory->deduction->observation
C. Observation->hypothesis->law->theory
D. Observation->hypothesis->deduction->testing of deduction

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D

5. Mammals possess brown fat specialized for rapid formation of:
A. Urine
B. Faeces
C. Heat
D. Sweat

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C

6. Study of chemical compounds & chemical processes in living organisms is:
A. Molecular biology
B. Chemistry
C. Biochemistry
D. Both B & C

Answer - Click Here:
C

7. The characteristic in which terrestrial animals can tolerate dehydration is known as:
A. Pyrosis
B. Chlorosis
C. Hydrobiosis
D. Anhydrobiosis

Answer - Click Here:
D

8. Which of the following is an organic compound?
A. Lipids
B. HCI
C. CO2
D. Water

Answer - Click Here:
A

9. A network of capillaries in which blood vessel of kidney subdivides:
A. Reticular capillaries
B. Efferent capillaries
C. Tubular capillaries
D. Peritubular capillaries

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D

10. ________ is the chemical component which has the same % in bacterial as the mammalian cell has:
A. Proteins
B. Lipids
C. Water
D. Carbohydrate

Answer - Click Here:
C

11. Nitrogenous nature lead to the elimination of wasteful metabolites called:
A. Excretion
B. Respiration
C. Digestion
D. Assimilation

Answer - Click Here:
A

12. ________ has the highest contribution in total mammalian cell weight:
A. Lipids
B. Water
C. Proteins
D. Carbohydrate

Answer - Click Here:
B