Biology MCQs

11. Microfilaments are made up of which protein?
[A] Tubulin
[B] Actin
[C] Myosin
[D] Chitin

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12. Which one of the following is an example of a phospholipid?
[A] Steroid

[B] Cholesterol
[C] Lecithin
[D] Sterol

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13. Angiosperms are the main plant because__?
[A] Domestication by man
[B] Power of adapting in diverse habitats
[C] Self-pollination property
[D] Property of producing a large number of seeds

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14. Which of the following is the final step in the synthesis of peptidoglycan?
[A] attachment of a peptide to muramic acid
[B] attaching two amino acids to form a cross-link
[C] attachment of a portion of peptidoglycan to a membrane lipid
[D] binding of penicillin to a membrane protein

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15. The resin duct of a gymnospermous stem is an example of__?
[A] Big vacuole
[B] Lysigenous cavity
[C] Intercellular space
[D] Schizogenous cavity

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16. What does the lateral meristem provide to the plant?
[A] length of the plant
[B] thickness of the plant
[C] size of the internode
[D] strength to the plant

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17. Which of the following stimulates by gibberellin hormone?
[A] shoot elongation
[B] seed germination
[C] fruit and flower maturation
[D] All of the above

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18. What is known as the exclusion of plant diseases by legislation?
[A] Disease resistance
[B] Plant quarantine
[C] Biological control of plant
[D] Cultural control

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19. Phylum Annelida is not characterized by__
[A] segmentation
[B] closed circulatory system
[C] ventral nerve chord
[D] pseudocoelom

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20. Which of the following is a correct feature of a frog?
[A] jaws but no teeth
[B] eyes but no lids
[C] ears but no pinnae
[D] hands but no fingers

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