Question

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.

• A. ii and iii
• B. i and iv
• C. i and ii
• D. iii and iv

Answer 1

The correct option is B i and iv

The opening and closing of stomata is due to the change in the turgidity of guard cells. When water enters into the guard cells, they become turgid and the stoma opens. When the guard cells lose water, it becomes flaccid and the stoma closes.