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

1. Ethylene

2. Abscisic acid

3. Gibberellin

4. Cytokinin

Doubtly Asked 30 Oct 2026 NEET UG 2025 Practice test neet Save WhatsApp Report

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Best answer

Answer: 4. Cytokinin

Key idea: Cytokinins delay leaf senescence by promoting nutrient mobilisation.

Ethylene and abscisic acid promote senescence, and gibberellin mainly promotes stem elongation. So cytokinin.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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