Question

What is the function of guard cells?

Answer 1

Stomata:

Stomata are tiny pores or openings present on the surface of the leaf that regulate the exchange of gases.

Guard cells:

1. Guard cells are specialized bean shaped cells surrounding the stomata.
2. They are triggered by sunlight.
3. They control the opening and closing of stomata.
4. When water enters the guard cells, they expand resulting in the opening of stomata.
5. When the guard cells lose water, they become flaccid leading to stomatal closure.
6. The stomata opens during the day and closes at night.

Final answer: Guard cells controls the opening and closing of stomata.