NEET Botany Question (2026) — Solution

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Gibberellins promote internode elongation just prior to flowering in rosette plants like cabbage, beet, and many other plants with a rosette habit. This phenomenon is known as bolting. Ethephon is a source of ethylene, which promotes fruit ripening and abscission. Abscisic acid acts as a general plant growth inhibitor and stress hormone. Indole butyric acid is a synthetic auxin widely used to induce rooting in stem cuttings. Answer: Gibberellin