NEET Botany Plant Growth and Development Questions Solved

AIIMS - 2014

ABA is involved in?
(a) shoot elongation    (b) increased cell division
(c) dormancy of seed  (d) root elongation

Abscisic acid (ABA) is a growth inhibitor, which is involved in seed dormancy. Dormant seeds germinate when ABA is overcome by gibberelllns. ABA cause dormancy in axillary buds and acts as stress hormone in adverse environmental conditions.

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