AP BIOLOGY

Detailed explanation-1: -The rate of transpiration Increases with the intensity of sunlight, high temperature, dry air, the velocity of wind, the high water content of the leaf. The rate of transpiration decreases with the closure of stomata, high humidity, high atmospheric carbon dioxide level, the low water content of leaf, shedding of leaf.

Detailed explanation-2: -The loss of water as vapor from plants at their surfaces, primarily through stomata. rates increase; when they are closed, transpiration rates decrease. A region of still air near the surface of a leaf through which water must diffuse en route to the atmosphere.

Detailed explanation-3: -Temperature-as temperature increases, so does the rate of transpiration. The lower the temperatures, the lower the transpiration rate. Guard cells tend to close the stomata in windy conditions to prevent that. Wind-generates more water loss because they lead to higher evaporation rates.

Detailed explanation-4: -Stomatal opening is essential for CO2 uptake for photosynthesis and stomatal closure is necessary to reduce transpiration, maintain plant water potential and prevent desiccation.