Question

how do guard cells regulate opening and closing of stomatal pores?

Answer 1

Guard cells are important for functioning of stomata .

Each stoma is guarded by a pair of bean shaped guard cells which govern the opening and closing of stomatal aperture.
That's why they are important.


Stomata :
Cells form a continuous layer , but in leavers epidermis has small openings called stomata.

Stomata in the epidermis of leaves help in gaseous exchange during respiration and photosynthesis.


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Answer 2

Answer:

Stomatal pores in plants regulate the amount of water and solutes within them by opening and closing theirguard cells using osmotic pressure. In order for plants to produce energy and maintain cellular function, their cellsundergo the highly intricate process of photosynthesis. Critical in this process is the stoma.