Question

How do the guard cells regulate opening and closing of stomatal pores?​

Answer 1

Answer:

When the proper amount of water is present in the guard cells it remains turgid in opened position.

But when the water is evaporated or used up.the pressure releases and it becomes closed.

HOPE IT HELPS.....

Answer 2

The opening and closing of stomata are controlled by the guard cells. When water flows into the guard cells, they swell up and the curved surface causes the stomata to open. When the guard cells lose water, they shrink and become flaccid and straight thus closing the stomata.