The opening and closing of the stomatal pore depends upon

(a) Concentration of oxygen in the atmosphere.
(b) Temperature of the atmosphere.
(c) Presence of water in guard cells.
(d) Concentration of ${CO}_{2}$ in stomata

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Solution

(c) Presence of water in guard cells.

The opening and closing of the pore is a function of the guard cells. The guard cells swell when water flows into them, causing the stomatal pore to open. Similarly, the pore closes if the guard cells shrink when water flows out from the guard cells.

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Similar questions

Q. The opening and closing of the stomatal pore depends upon

(a) Concentration of oxygen in the atmosphere.
(b) Temperature of the atmosphere.
(c) Presence of water in guard cells.
(d) Concentration of

{CO}_{2}

in stomata

Question 29
The opening and closing of the stomatal pore depends upon

(a) Oxygen
(b) Temperature
(c) Water in the guard cells
(d) Concentration of ${CO}_{2}$ in 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.

Q. The opening and closing of the stomatal pore depends upon

Q. How do the guard cells regulate opening and closing of stomatal pores?

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The opening and closing of the stomatal pore depends upon (a) Concentration of oxygen in the atmosphere. (b) Temperature of the atmosphere. (c) Presence of water in guard cells. (d) Concentration of CO2 in stomata

(c) Presence of water in guard cells. The opening and closing of the pore is a function of the guard cells. The guard cells swell when water flows into them, causing the stomatal pore to open. Similarly, the pore closes if the guard cells shrink when water flows out from the guard cells.

The opening and closing of the stomatal pore depends upon

(a) Concentration of oxygen in the atmosphere.
(b) Temperature of the atmosphere.
(c) Presence of water in guard cells.
(d) Concentration of ${CO}_{2}$ in stomata

(c) Presence of water in guard cells.

The opening and closing of the pore is a function of the guard cells. The guard cells swell when water flows into them, causing the stomatal pore to open. Similarly, the pore closes if the guard cells shrink when water flows out from the guard cells.