BotanyNEET 2023Plant growth regulators: auxin, gibberellin, cytokinin, ethylene, ABA

Plant Growth and Development

Which hormone promotes internode/petiole elongation in deep-water rice?

A. $G A_{3}$
B.Kinetin
C.Ethylene✓
D.2,4-D

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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From Botany › Plant Growth and Development › Plant growth regulators: auxin, gibberellin, cytokinin, ethylene, ABA — lectures, notes and every past question on it.

Last revised 7 Sept 2026. Found a mistake? Tell us — corrections are the fastest thing we act on.

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