When does the stomatal aperture open?

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Question

(A) The opening and closing of the stomatal aperture are regulated by the turgor pressure of the guard cells.When the guard cells become turgid due to

Vedclass · Accepted Answer

When the thin outer walls of guard cells bulge outwards.

Vedclass · Answer

(A) The opening and closing of the stomatal aperture are regulated by the turgor pressure of the guard cells.When the guard cells become turgid due to water influx,their thin outer walls bulge outwards and force the thick inner walls into a crescent shape.This movement pulls the inner walls away from each other,thereby opening the stomatal pore.Therefore,the correct condition for the opening of the stomatal aperture is when the thin outer walls of the guard cells bulge outwards.

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