Question

explain the opening and closing of stomatal pore??​

Answer 1

Explanation:

They give out excess water released in the process of respiration during night along with carbon dioxide. Opening and closing of stomata is controlled by concentration of solutes in the guard cell. ... Guard cells become turgid due to water accumulation in them which results in the opening of the guard cells.

Answer 2

The air rich in Co2 enters through the process of diffusion inside the cell with the help of stomatal pore which opens with the help of guard cells because the opening and closing is controlled by guard cells...

All the gaseous exchange takes place through stomata.....and also loss of water also takes place through it....