Conversion of starch to organic acids is required for

Options

A. stomatal closure
B. stomatal opening
C. stomatal initiation
D. stomatal growth

Answer

B

Explanation

The starch hydrolyse into glucose 1-phosphate so that, osmotic potential becomes lower in guard cells. As a result of this water enters into the guard cell by osmotic diffusion from surrounding epidermal and mesophyll cells. Guard cells become turgid and stomata will open. The starch-sugar interconversion theory about the mechanis of stomatal movement was given by Syyere (1923) and modified by Steward (1964).