Biology MCQs

11. Which is not a parasite? (UPSC Prelims 1984)
[A] Tick
[B] Housefly
[C] Bed bug
[D] Louse

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12. Genetic code is made up by the four-letter alphabet forming the pairs? (UPSC Prelims 1985)
[A] A—C, C—A, T—G, G—T
[B] A—G, G—A, C—A, T—C
[C] T—G, G—T, A—C, C—A
[D] A—T, T—A, C—G, G—C

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13. Which one of the following diseases is least infectious? (UPSC Prelims 1991)
[A] Leprosy
[B] Tuberculosis
[C] Conjunctivitis
[D] Hepatitis

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14. Epiphytes are plants which depend on other plants for? (UPSC Prelims 2001)
[A] food
[B] mechanical support
[C] shade
[D] water

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15. Who among the following first discovered the process of digestion?
[A] Nehemiah Grew
[B] William Beaumont
[C] Alister Hardy
[D] None of these

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16. Which one of the following is an example of a phospholipid?
[A] Steroid

[B] Cholesterol
[C] Lecithin
[D] Sterol

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17. What is the shape of enveloped viruses?
[A] icosahedral
[B] helical
[C] roughly spherical
[D] complex

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18. Which of the following are the most primitive vascular plants?
[A] Mosses
[B] Cycads
[C] Kelps
[D] Ferns

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19. Into how many subgroups is the plant kingdom classified?
[A] Three
[B] Four
[C] Five
[D] Six

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20. Which of the following is analogous to mesosome of bacteria?
[A] Mitochondria of eukaryotes
[B] Golgi apparatus of eukaryotes
[C] Lysosomes of eukaryotes
[D] None of these

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