Question

How does dry air affect transpiration rate (Increase, decrease, no change) and why?

Answer 1

Dry air can decrease the transpiration rate.

Step-by-step explanation:

Dry air can cause the stomata to close in order to conserve water, which also reduces transpiration.

Answer 2

The effect of dry air is in Increased movement of the air around a plant will result in a higher transpiration rate.

Step-by-step explanation:

It is easier for water to evaporate into dryer air than into more saturated air. Increased movement of the air around a plant will result in a higher transpiration rate. If there is no wind, the air around the leaf is still and transpiration raises the humidity around each leaf.