Biology MCQs

11. Which of the following cells are closely associated and interacting with guard cells?
[A] Transfusion tissue
[B] Complementary cells
[C] Subsidiary cells
[D] Hypodermal cells

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12. Which of the following gave green colour to plants? (UPSC Prelims 1980).
[A] Chlorophyll
[B] Sugar
[C] Mitochondria
[D] Xylem

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13. Which of the following plants is biennial? (UPSC Prelims 1989)
[A] Banana
[B] Pineapple
[C] Jack fruit
[D] Carrot

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14. Which of the following is the quality of the pitch of the voice of women? (UPSC Prelims 1994)
[A] marginally lower than that of men
[B] higher than that of men
[C] much lower than that of men
[D] the same as that of men

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15. Which one of the following is a membrane that protects the developing embryo from desiccation? (UPSC Prelims 1995)
[A] Amnion
[B] Allantois
[C] Chorion
[D] Yolk sac

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16. In which of the following Alpha-keratin, a protein is present? (UPSC Prelims 2002)
[A] Blood
[B] skin
[C] wool
[D] eggs

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17. Which vitamin is also called as niacin?
[A] Vitamin C
[B] Vitamin B3
[C] Vitamin B12
[D] Vitamin B9

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18. Francis Galton is related to which of the following science?
[A] Eugenics
[B] Microbiology
[C] Bryology
[D] Ecology

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19. Which of the following is the largest group of the plant kingdom?
[A] Thallophyta
[B] Bryophyta
[C] Pteridophyta
[D] Euglena

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20. What is a motile flagellated asexual cell called?
[A] Sperm
[B] Zoospore
[C] Oospore
[D] Androspore

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