Question

With a decrease in atmospheric pressure, the rate of transpiration will _________.

• A. decrease slowly
• B. increase
• C. remain the same
• D. decrease rapidly

Answer 1

The correct option is C

remain the same

The rate of transpiration increases when atmospheric pressure is low. During low atmospheric pressure, air will move out of the plant as a result of diffusion. At low pressure, the water vapour moves fast thus the rate of transpiration increases. At higher atmospheric pressure plant will lose water at slow rate..