DENDROLOGY

Detailed explanation-1: -As the relative humidity of the air surrounding the plant rises the transpiration rate decreases. 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.

Detailed explanation-2: -When the moisture carrying capacity of the air increases, there is more space left for new water molecules to accommodate in the air. This increases the rate of transpiration through plants. Similarly, when the light intensity decreases, the rate of transpiration also decreases.

Detailed explanation-3: -The rate of transpiration depends on the relative humidity of the air. The more the humidity of air, the less the rate of transpiration.