Question

Guard cells help in

• A. Protection
• B. Fighting against infection
• C. Guttation
• D. Transpiration

Hint:

Opening and closing of stomata by guard cells controls transpiration.

Answer 1

The Correct Option is D

Step 1: Guard cells surround the stomatal pore present on the leaf surface.
Step 2: By opening and closing the stomata, guard cells regulate the exchange of gases and the loss of water vapour.
Step 3: This regulated loss of water vapour from the plant body is known as transpiration. Hence, guard cells help in transpiration.