HORTICULTURE

Detailed explanation-1: -Relative humidity Therefore when the humidity is high (lots of water vapour in the air) the water potential gradient between the inside of the leaf stomata and the atmosphere is shallow and the rate of transpiration will be low.

Detailed explanation-2: -Temperature: A rise in temperature increases the water loss by transpiration. Transpiration increases with an increase in temperature to a certain point. Stomata close when the temperature falls to very low or increases to very high ultimately ceasing the process of transpiration.

Detailed explanation-3: -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.

Detailed explanation-4: -Chlorophyll content of leaves does not directly affect rate of transpiration.