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. Why honey bees are called social insects? (UPSC Prelims 1982)
[A] They visit all flowers to collect nectar
[B] They live in large family groups
[C] They depend for their food upon other insects
[D] They move socially with other insects

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13. Which of the following clearly define Lichens? (UPSC Prelims 1984)
[A] Algae and fungi
[B] Algae and virus
[C] Fungi and virus
[D] Virus and bacteria

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14. Who among the following has defined race in population concept?
[A] Montagu
[B] Dobzhansky
[C] Templeton
[D] Hooton

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15. Empedocles is related to which of the following theory of biology?
[A] theory of cell
[B] theory of natural selection
[C] theory of mutation
[D] theory of disease

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16. Who among the following is considered to be the father of DNA?
[A] James Watson
[B] Hargobind Khurana
[C] Alec Jeffereys
[D] Leslie Orgel

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17. The cytoplasmic membrane of which of the following organisms contains sterols?
[A] Clostridum
[B] Proteus
[C] Mycoplasma
[D] Bacillius

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18. Which of the following includes ‘club fungus’ in this fungal division?
[A] Zygomycota
[B] Deuteromycota
[C] Basidiomycota
[D] Ascomycota

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19. Which of the following is an indicator of SO2 pollution of air?
[A] Puffballs
[B] Mushrooms

[C] Mosses
[D] Lichens

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20. Gymnosperms are never__?
[A] medium-sized trees
[B] tall trees
[C] herbs
[D] shrubs

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