How does humidity affects the rate of transpiration?

Answer 1

Transpiration rates decrease proportionally to the amount of humidity in the air. This is because water diffuses from areas of higher concentration to areas of lower concentration. Thus, when the air spaces between the mesophyll cells in a leaf are saturated with water vapor, and the air outside the leaf is likewise saturated, there is a shallow gradient. A shallow gradient results in a slower transpiration rate. Conversely, if the air outside the leaf is relatively dry, the gradient becomes steep and the rate of transpiration increases.

Answer 2

As temperature increases, the rate* of evaporation also increases as water molecules move more rapidly at higher temperatures than at low tempratures and also because warm air can hold more water vapour than the cold air. So, on a warm day, the rate of transpiration is hence more than on a cold day.

* It should be noted that the term rate is used to imply: with respect to time.

Answer 3

As the temperature increases, the rate of transpiration increases. This is because if it is warm the plant cells that control the stoma (openings on underside of leaf), make them open wider to allow more water to evaporate. If it is cold, the stoma will remain closed or they will only open a very small way meaning that little water can evaporate.

Edited answer:

The opening and closing of stomata is regulated by sun shine. Temperature inhances the rate of water evaporation from leaves through stomata. Hence increase in transpiration is recorded with increse in temperature.

Answer 4

if the room temprature is hot so the transpiration fastest and if room temprature is cold the transpiration slows

Answer 5

How does humidity affect the rate of transpiration

Answer 6

Humidity causes the rate of transpiration to increase. The higher the humidity the slower the rate, and the lower the humidity the higher the transpiration rate.