Question

During high wind velocity, the stomata

• A. Open more widely
• B. Close down
• C. Remain unaffected
• D. Remain unaffected but lose more water due to mass action

Answer 1

The correct option is B Close down

The wind velocity of 20-30- km/hr increases the rate of transpiration as the wind velocity removes the saturated air around the leaves but high wind velocity with a range 40-50 km/hr, decreases the rate of transpiration by closing the stomata due to mechanical effect, drying and cooling of transpiring organs.

So, the correct answer is option B.