Q. Accumulation of which one of the following acids results in closure of stomata :

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Q. Accumulation of which one of the following acids results in closure of stomata :

Q. Accumulation of which one of the following acids results in closure of stomata :

(a) Malic acid

(b) Aspartic acid

(c) PEP

(d) OAA

Solution

Correct option : A Accumulation of maleic acid in stomata causes its closure. This causes an efflux of potassium ions too. Then exosmosis occurs and the cells become flaccid. So the correct answer is ‘Malic acid’.

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