Biology MCQs

11. Which virus belongs to the family Caliciviridae?
[A] Hepatitis B virus
[B] Hepatitis D virus
[C] Hepatitis E virus
[D] All of these

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12. Plants that reproduce by spores are classified into which of the following?
[A] Bryophytes
[B] Sporophytes
[C] Cryptogams
[D] Thallophytes

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13. Chemotaxis is a phenomenon of__?
[A] swimming away of bacteria
[B] swimming towards a bacteria
[C] swimming away or towards of bacteria in presence of chemical compound
[D] All of the above

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

[C] Mosses
[D] Lichens

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15. Fruits are not found in gymnosperm plants because__?
[A] They are seedless plants
[B] They are not pollinated
[C] They have no ovary
[D] Process of fertilization does not take place in them

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16. It is the uppermost part or receptive end of the carpel in the gynoecium of a flower, what is it called?
[A] Stigma
[B] Style
[C] Ovary
[D] None of these

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17. Which is a factor promoting cross-pollination?
[A] unisexual flowers
[B] Self-incompatibility
[C] Non-Synchronization
[D] all of these

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18. Which of the following is not a part of the flower?
[A] Petals
[B] Sepals
[C] Pistil
[D] Pericarp

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19. Which characters are not typical to class Mammalia?
[A] Alveolar lungs
[B] Seven cervical vertebrae
[C] Thecodont dentition
[D] Ten pairs of cranial nerves

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20. What is the shell of a mollusk produced by?
[A] Radula
[B] Thorax
[C] Mantle
[D] Abdomen

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