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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Answer 2

Answer:

*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.

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Explanation: