The abscisic acid acts as an antitranspirant | vedclass

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Question

(B) $ABA$ (Abscisic acid) acts as a stress hormone that promotes stomatal closure to reduce transpiration. It functions by inducing the efflux of $K^+

Vedclass · Accepted Answer

making the guard cells turgid

Vedclass · Answer

(B) $ABA$ (Abscisic acid) acts as a stress hormone that promotes stomatal closure to reduce transpiration. It functions by inducing the efflux of $K^+$ ions from the guard cells. This loss of ions decreases the osmotic pressure within the guard cells,causing water to move out,which makes the guard cells flaccid (hypotonic). Therefore,making the guard cells turgid is the opposite of the action of $ABA$,as turgidity leads to stomatal opening.

The abscisic acid acts as an antitranspirant in plants by the following processes $EXCEPT$ . . . . . . .

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