Question

The rate of transpiration in plants is more when

• A. atmosphere is humid
• B. atmosphere is dry
• C. temperature is low
• D. atmosphere is dry and temperature is high

Answer 1

The correct option is D

atmosphere is dry and temperature is high

The correct option is D.

Explanation of the correct option:

1. Transpiration is defined as the physiological loss of water in the form of water vapor.
2. The transpiration rate is directly proportional to the absorption of water by the roots from the soil.
3. The transpiration rate is increased due to the dryness in the atmosphere and rapidly at higher temperatures because water evaporates more rapidly as the temperature rises.

Explanation of the incorrect option:

Option A:

Humidity in the atmosphere does not improve the transpiration rate.

Option B:

Atmosphere is dry, which increases the transpiration rate.

Option C:

Temperature is low, the transpiration is also low.

Final answer: The rate of transpiration in plants is more when atmosphere is dry and temperature is high.