Which one of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in plants?

Question

Which one of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in plants?

1. A. Ethylene
2. B. Abscisic acid
3. C. Gibberellin
4. D. Cytokinin (Correct answer)

Correct Answer

Option D — Cytokinin

Detailed Solution & Explanation

The correct answer is Cytokinin.

Key Points

• Cytokinins promote nutrient mobilisation, which helps delay leaf senescence (the Richmond-Lang effect).
• They also help overcome apical dominance and promote cell division.