Biology MCQs

11. In a majority of flowering plants, out of the four megaspores, what is the ratio of functional and degenerate megaspores?
[A] 2:2
[B] 1:3
[C] 4:1
[D] 3:1

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12. How many vocal cords are there in the human voice box?
[A] one
[B] Three
[C] Two
[D] Four

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13. Rickets is caused due to the deficiency of which of the following vitamins?
[A] Vitamin A
[B] Vitamin D
[C] Vitamin C
[D] Low intake of proteins

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14. How the body temperature is maintained?
[A] Due to temperature regulating mechanism located in the base of the brain
[B] Due to excessive intake of water
[C] Due to regular intake of foods
[D] Due to the constant flow of blood in the capillaries

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15. Poliomyelitis is an epidemic virus infection. Which of the following is responsible for it? (UPSC Prelims 1985)
[A] Rhabdo virus
[B] Entero virus
[C] Dengue virus
[D] Mumps virus

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16. Which of the following contained in Chlorophyll helps to absorb light? (UPSC Prelims 1989)
[A] Beryllium
[B] Calcium
[C] Magnesium
[D] Strontium

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17. Which one of the following is a useful functional association between fungi and the roots of higher plants? (UPSC Prelims 1999)
[A] Biofertilizer
[B] Coralloid root
[C] Lichen
[D] Mycorrhiza

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18. Which vitamins are abundant in cod liver oil?
[A] Vitamins A and C
[B] Vitamins A and D
[C] Vitamins E and K
[D] Vitamins B and C

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19. Who is known as the ‘God of plants’?
[A] Soma
[B] Varuna
[C] Rudra
[D] Indra

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20. Branch of science dealing with the medicinal plants is known as__?
[A] Pharmacognosy
[B] Pharmacology
[C] Phenology
[D] None of these

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