Plant Hormones · Botany

Which hormone helps in delaying the aging of plant leaves?

  1. Cytokinin
  2. Ethylene
  3. Auxin
  4. Abscisic acid
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Correct answer: Cytokinin

Cytokinins delay senescence or aging in plant leaves. They maintain chlorophyll levels and prolong leaf life.

Difficulty: Medium Question 7 of 20

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