Biology MCQs

11. Which of the following carries oxygen to various parts of human body?
[A] Red blood cells
[B] Nerves
[C] Plasma
[D] White blood cells

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12. Which of the following is the name given to the Inspection and dissection of a body after death in human beings as for determination of cause of death? (UPSC Prelims 1988)
[A] Autopsy
[B] Autotomy
[C] Autoesism
[D] Autograft

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13. Which of the following represent Dinosaurs? (UPSC Prelims 1989)
[A] A reptile
[B] An amphibian
[C] A mammal
[D] A bird

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14. Consider the following effects of genetic engineering:

  1. Disease resistance
  2. Growth promotion
  3. Closing
  4. Longevity

Of these effects, those that have be entried out with a certain amount of success include (UPSC Prelims 1990)

[A] 1, 3 and 4
[B] 2, 3 and 4
[C] 1, 2 and 4
[D] 1, 2 and 3

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15. Which organelle in the cell, other than nucleus, contains DNA? (UPSC Prelims 2001)
[A] Centriole
[B] Golgi apparatus
[C] Lysosome
[D] Mitochondrion

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16. Consider the following statements:

  1. Tapeworm is a hermaphrodite.
  2. Round-worm has separate sexes.
  3. Filaria is caused by a nematode.
  4. Guinea-worm is an annelid.

Which of these are correct? (UPSC Prelims 2001)

[A] Only 1 and 2
[B] 1, 2 and 3
[C] 3 and 4
[D] 2, 3 and 4

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17. Which of the following correctly defines an Antigen? (UPSC Prelims 2002)
[A] Lowers body temperature
[B] destroys harmful bacteria
[C] triggers the immune system
[D] is used as an antidote to poison

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18. Deficiency in which among the following leads to beriberi disease?
[A] Vitamin B1
[B] Vitamin B2
[C] Vitamin B3
[D] Vitamin B6

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19. Which vitamin is also called as retinol?
[A] Vitamin A
[B] Vitamin C
[C] Vitamin D
[D] Vitamin K

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20. In photosynthesis, light energy is converted into which form of energy?
[A] Electrical energy
[B] Kinetic energy
[C] Chemical energy
[D] Potential energy

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