Question

How do guard cells regulate opening and closing of stomatal pores?
write the answer according to a 3 mark question

Answer 1

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HERE IS YOUR ANSWER,


> The swelling of guard cells due to absorption of water causes opening of stomatal pores while shrinking of guard cells closes the pores.

> Opening and closing of stomata occurs due to turgor changes in guard cells.

> When guard cells are turgid, stomatal pore is open while in flaccid conditions, the stomatal aperture closes.


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Answer 2

Answer:

The opening and closing of stomatal pores is regulated by guard cells by increasing or decreasing the amount of water in them. When water enters the guard cells, they become turgid. This results in opening of stomata) pore. When water exits from the guard cells, they become flaccid. This results in closing of stomata.