Question

Identify the correct statements and find out the correct combination?
1. Accumulation of $K^{+}$ ions in guard cell does not require energy.
2. A high pH favors stomatal opening.
3. Movement of chloride ions into guard cells is in response to electrical differential created by $K^{+}$ ions.
4. With the entry of several $K^{+}$ ions and chloride ions, the water potential of guard cells increases.

• A. 1 and 3
• B. 1 and 2
• C. 2 and 3
• D. 3 and 4

Answer 1

The correct option is C 2 and 3

The opening and closing of stomata are controlled by many factors such as light, pH, amount of water and solute and the osmotic pressure.

So, the correct answer is '2 and 3'.