Biology MCQs

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

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13. At which stage in its life-cycle does the silkworm yield the fibre of commerce? (UPSC Prelims 2000)
[A] Egg
[B] Larva
[C] Pupa
[D] Imago

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14. Which among the following genus is known as the ‘handy man’?
[A] Homo sapiens sapiens
[B] Homo habilis
[C] Homo sapiens neanderthelensis
[D] Homo erectus

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15. In the branch of biology, what is the transmission of paternal traits to progeny called?
[A] Genetics
[B] Heredity
[C] Gerontology
[D] Genetic Engineering

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16. Gonyaulax, which are known for causing red tides, belong to which of the following?
[A] Algae
[B] Fungi
[C] Protista
[D] Bacteria

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17. What type of embryo is most often used for viral assays?
[A] Mouse
[B] Rat
[C] Cat
[D] Chicken

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18. Classification is based on the following criteria?
[A] Plant body
[B] Vascular system
[C] Seed formation
[D] All of the above

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19. An important product of the Krebs cycle is__?
[A] Water
[B] Methane
[C] ATP
[D] None of the above

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20. Which of the following is a heterotrophic plant?
[A] Parasitic

[B] Insectivorous
[C] Symbiotic
[D] All of these

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