Question

Of all the environmental factors which is the most influential in determining the rate of transpiration?

• A. Relative humidity of atmosphere
• B. Temperature
• C. Light
• D. Water

Answer 1

The correct option is A Relative humidity of atmosphere

Transpiration is the process by which the plant loses water through stomata. There are several factors which affect the rate of transpiration such as light, humidity, temperature wind. Plant transpire more in light than in dark. Humidity affects the rate of transpiration. If the air is dry then the rate of transpiration is more. Plants transpire more at a higher temperature. Water does not affect the rate of transpiration.

Thus the correct answer is option B.