Which among the following is the function of guard cells?
(A) Opening and closing of stomata
(B) Production of antioxidants
(C) Protection
(D) Transmission of spores

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Solution

Answer: (A) Opening and closing of stomata
Guard cells are kidney shaped cells that surrounds the stomata. They control the opening and closing of the stomata. When the plant has an excess of water, the guard cells swell and create an opening for the exchange of gases. In dry conditions, the guard cells are flat and keep the stomata closed, inhibiting exchange of gases.

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Similar questions

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

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

Guard cells regulate the opening and closing of stomata.

Q. How do guard cells control opening and closing of stomata ?

Q. Assertion: Opening and closing of stomata is controlled by guard cells.
Reason: Shrinking of guard cells results in the opening of stomatal pore.

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Which among the following is the function of guard cells? (A) Opening and closing of stomata (B) Production of antioxidants (C) Protection (D) Transmission of spores

Which among the following is the function of guard cells?
(A) Opening and closing of stomata
(B) Production of antioxidants
(C) Protection
(D) Transmission of spores