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← Enzymes and Hormones
GK QUESTION#3942

Consider the following statements regarding plant hormones:

1. Auxins help maintain apical dominance in plants.

2. Cytokinins speed up the ageing process in leaves.

3. Ethylene plays a major role in hastening fruit ripening.

Which of the above statements are correct?

  1. AOnly 1 and 2
  2. BOnly 1 and 3Correct answer
  3. COnly 2 and 3
  4. D1, 2 and 3
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Answer

B. Only 1 and 3

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Explanation

Statements 1 and 3 are correct. Auxin contributes to apical dominance, and ethylene promotes ripening of climacteric fruits. Cytokinins generally delay leaf senescence rather than accelerating it.

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