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Q.

Which plant hormone encourages seed and bud dormancy?


 

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a

Abscisic acid


 

b

Gibberellin


 

c

Auxin

d

Cytokinin

answer is A.

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Detailed Solution

Solution:

Concept: By suppressing growth, abscisic acid (ABA) induces seed and bud dormancy. It is one of the most significant growth regulators for plants. 

In plants under water stress, ABA plays a key role in stomata closure, and its existence inhibits opening.


 

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