Question

Write about the mechanism of opening and closing of a stomata

Answer 1

The guard cells that surround the stoma regulate/control the opening or closing of the stoma.

Hope this helps you!!

Answer 2

The opening and closing of the pore is a function of the guard cells. The guard cells swell when water flows into them , causing the stomatal pore to open. Similarly the pore closes if the guard cells shrink.