Question

A stomata closes when :
(i) it needs carbon dioxide for photosynthesis.
(ii) it does not need carbon dioxide for photosynthesis.
(iii) water flows out of the guard cells.
(iv) water flows into the guard cells.
The correct reason(s) in this process is/are :

• A. (i) only
• B. (i) and (iii)
• C. (ii) and (iii)
• D. (ii) and (iv)

Answer 1

The Correct Option is C

Stomata close when the plant does not need carbon dioxide for photosynthesis and water flows out of the guard cells. This causes the guard cells to become flaccid, closing the stomatal pore.