Select the correct events leading to the opening of the stomata
(i) Decline in guard cell solutes
(ii) Lowering of osmotic potential of guard cells
(iii) Rise in potassium levels in guard cells
(iv) Movement of water from neighbouring cells into guard cells
(v) Guard cells becoming flaccid

Options

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

Answer

B

Explanation

In light respiratory` CO_(2)` in the intercellular space is consumed in photosynthesis by the mesophyll guard cells show alkaline reaction: pH rise the alkaline reaction favours hydrolysis of starch to sugar. The osmotic pressure of sap of the guard cells increases and water enters the guard cell and volume increase as a result stomata open.