Biology MCQs

11. Which among the following is NOT a major function of the plant hormone Abscisic Acid?
[A] Abscission of Leaves
[B] Inhibition of growth and maintenance of the dormancy of buds
[C] Inhibition of germination in dormant seeds
[D] All of them are major functions of Abscisic Acid
All of above are major functions of Abscisic acid

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12. What is another name for Koshland’s theory of enzyme action?
[A] Reduced fit theory
[B] Induced fit theory
[C] Enzyme coenzyme theory

[D] Lock and key theory

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13. Which of the following is not the Class of Biomolecules?
[A] Carbohydrate
[B] Proteins
[C] Catalyst
[D] Nucleic acids and Lipids

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14. Which bacteria do not have a cell wall and are therefore resistant to penicillin?
[A] Cyanobacteria
[B] Mycoplasmas
[C] Bdellovibrios
[D] Spirochetes

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15. Who is known as the “Father of Phycology”?
[A] Fritsch
[B] Papenfus
[C] Smith
[D] Morris

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16. What tissues are found in the root and shoot ends of a plant?
[A] Primary Meristem
[B] Secondary Meristem
[C] Promeristem
[D] Apical Meristem

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17. Carbon Dioxide from the air is trapped by which of the following parts of the plant?
[A] Petals
[B] Root hairs
[C] Stomata
[D] Mitochondria

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

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19. What is the main mode of nutrition in plants?
[A] autotrophic mode
[B] heterotrophic mode
[C] Parasitic mode
[D] Saprophytic mode

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20. What is the stage in which a plant slows down its cellular activity and sheds its leaves?
[A] dormancy
[B] abscission
[C] tropisms
[D] None of these

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