A) IAA
B) Abscisic Acid (ABA)
C) GA (Gibberellic Acid)
D) Cytokinin
Correct Answer: B
Solution :
Abscisic Acid (ABA) in natural growth inhibitor. It promotes stomatal closure, i.e. it is a stress hormane and helps the plant to cope with adverse environment especially drought. It induces dormancy is buds and seeds and make the stomata remains close. These seeds are sprouted only when ABA is overcome by GA.
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