Question

Transpiration is least in:

• A. High atmospheric humidity
• B. High wind velocity
• C. Dry environment
• D. Low atmospheric humidity

Answer 1

The correct option is A High atmospheric humidity

Transpiration is loss of water from aerial parts of the plants through stomata. It is affected by multiple factors like humidity, wind, soil moisture and temperature.

Transpiration is least in high atmospheric humidity. When atmospheric humidity is high, water potential gradient between leaf and surrounding atmosphere is shallow and the rate of transpiration is low.

Increased movement of air will increase the rate of transpiration and hence higher wind velocity causes more transpiration.