Biology MCQs

11. Which of the following is the main constituent of the Gobar gas? (UPSC Prelims 1979).
[A] Carbon dioxide
[B] Methane
[C] Ethylene
[D] Carbon monoxide

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12. BCG vaccination is to be given to a new born child after what time? (UPSC Prelims 1979).
[A] Immediately after birth
[B] Within 48 hours
[C] Within seven days
[D] Within six months

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13. Which of the following clearly defines the meaning of Plankton? (UPSC Prelims 1982)
[A] A kind of fish
[B] A submerged platform in waters
[C] Drifting of organisms in a body of water
[D] A kind of animal living under water

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14. Which of the following clearly define Pyrilla? (UPSC Prelims 1991)
[A] Disease of teeth and gums
[B] An insect pest
[C] A character of ancient Greek mythology
[D] A building heated by solar energy

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15. Consider the following conditions of sick human body
1. Swollen lymph nodes
2. Sweating at night
3. Loss of memory
4. Loss of weight
Which of these are the symptoms of AIDS? (UPSC Prelims 2003)
[A] 1 and 2
[B] 2, 3 and 4
[C] 1, 2 and 3
[D] 1, 2, 3 and 4

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16. Which among the following is not a fat soluble vitamin?
[A] Vitamin A
[B] Vitamin B
[C] Vitamin K
[D] Vitamin D

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17. Which branch of biology is deal with the study of seeds?
[A] Embryology
[B] Spermatology
[C] Gerontology
[D] Histology

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18. Robert Hooke is known for which of the following works?
[A] how messages pass between nerve cells in mammals
[B] first use of the word cell
[C] theory of punctuated equilibrium
[D] aquatic ape theory

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19.
Who among the following is considered to be the father of Comparative Anatomy?
[A] Georges Cuvier
[B] Stephen Hales
[C] Hugo de Vries
[D] Edwin John Butler

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20. Which of the following causes chloroplasts to be green?
[A] because they contain the pigment cobalt
[B] because they contain the pigment chlorophyll
[C] because they contain the pigment carotenoids
[D] because they contain the pigment betacyanins

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