AP BIOLOGY

Detailed explanation-1: -Transpiration rate increases with the velocity of wind and intensity of light. As the humidity of the outside atmosphere is increased, transpiration decreases.

Detailed explanation-2: -Light intensity: The transpiration rate is increased due to the increase in light intensity. During daytime in the sunlight, the rate of transpiration is faster. This is because the stomata remains open to allow the inward diffusion of carbon dioxide for photosynthesis.

Detailed explanation-3: -The light intensity, temperature, humidity, wind and water supply will all affect the transpiration rate.

Detailed explanation-4: -The opening and closing of stomata is the function of light. During the daytime, stomata remain open to facilitate the exchange of gases, so that carbon dioxide could enter the plants thus, carrying out photosynthesis. Hence during the daytime rate of transpiration is also high.