Question

As light intensity increases, rate of transpiration

• A. increases
• B. decreases
• C. remains same
• D. decreases and then increases

Answer 1

The correct option is A

increases

Light affects transpiration by influencing the opening and closing of the stomata. During the day more stomata are open and this increases the water loss from the plant.

While the rate of transpiration reduces in the night as most of the the stomatas remain closed.