What are the two factors stomata depends upon to open and close guard and subsidiary cells alternately?

Turgidity and cell sap pressure

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Transpiration and capillary action

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Turgidity and flaccidity

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Surrounding moisture and cell sap pressure

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Solution

The correct option is C
Turgidity and flaccidity

Turgidity and flaccidity

This take place because when the guard cells are turgid, while the subsidiary cells are flaccid, the stoma remains open, but when the guard cells lose water into subsidiary cells the guard cells become flaccid while the subsidiary cells turns turgid, which results in the closure of the stoma.

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Similar questions

Q. Which of the following statement is correct regarding opening and closing of stomata?
(i) stomata opens when guard cells are turgid.
(ii) stomata closes when guard cells are turgid.
(iii) stomata opens when guard cells are flaccid.
(iv) stomata closes when guard cells are flaccid.

Q. What causes the opening and closing of guard cells of stomata during transpiration?

In plant cells, vacuoles are full of cell sap and provide turgidity and rigidity to the cell. True or false?

Q. Guard cells control opening and closing of stomata.

The opening and closing of the stomatal pores depends upon :
(a) oxygen (b) water in guard cells (c) temperature (d) concentration of $C O_{2}$ in stomata

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