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Question

ABA causes temporary closure of stomata when there is a shortage of water because it


A

Delays cell division and cell elongation

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B

Interferes with the transport of K+ ions into the guard cells

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C

Causes rapid abscission of leaves and flowers.

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D

It stops mitosis in vascular cambium during winter season.

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Solution

The correct option is B

Interferes with the transport of K+ ions into the guard cells


ABA changes permeability of guard cell's membrane.


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