Biology MCQs

11. Which of the following is not immunized by the Triple Antigen? (UPSC Prelims 1984)
[A] Diphtheria
[B] Tetanus
[C] Typhoid
[D] Whooping cough

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12. Which of the following is/are found in plant cells but not in those of animals? (UPSC Prelims 1987)
[A] Plastid & Cellular wall
[B] Chromosome
[C] Mitochondria & Golgi apparatus
[D] Cell wall & lysozyme

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13. Which of the following microorganisms causes Ring worm? (UPSC Prelims 1990)
[A] Bacterium
[B] Fungus
[C] Virus
[D] Worm

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14. The introduction of Pre-natal Diagnostic Techniques Bill in Parliament was prompted by the increasing incidence of? (UPSC Prelims 1992)
[A] Female foeticide
[B] Failure of contraceptive devices
[C] Spurious drugs being used for prenatal immunisation
[D] Unqualified persons diagnosing pregnancy in villages by primitive methods

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15. Which one of the following vitamins is considered to be a hormone? (UPSC Prelims 1994)
[A] A
[B] B
[C] C
[D] D

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16. Which of the following is done by an Antigen? (UPSC Prelims 1997)
[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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17. Endoscopy, a technique used to explore the stomach or other inner parts of the body is based on the which of the following phenomenon? (UPSC Prelims 1999)
[A] Total internal reflection
[B] interference
[C] diffraction
[D] polarisation

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18. In a bisexual flower, if androecium and gynaecium mature at different times, which of the following is the name given to the phenomenon? (UPSC Prelims 2002)
[A] Dichogamy
[B] Herkogamy
[C] Heterogamy
[D] Monogamy

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19. Which among the following vitamins is absent in an egg?
[A] Vitamin D
[B] Vitamin C
[C] Vitamin A
[D] Vitamin K

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20. How many mutations does Omicron have till the end of 2021?
[A] 13
[B] 18
[C] 25
[D] More than 30

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