AP BIOLOGY

Detailed explanation-1: -Transpiration (evaporation) occurs because stomata are open to allow gas exchange for photosynthesis.

Detailed explanation-2: -Because water molecules like to stick together (cohesion) and like to stick to the walls of the tubes of cellulose (adhesion), they rise up the tubes all the way from the roots to the leaves. Water then evaporates from the leaves, helping to draw up more water from the roots. This process is called capillary action.

Detailed explanation-3: -Higher temperatures cause the plant cells which control the openings (stoma) where water is released to the atmosphere to open, whereas colder temperatures cause the openings to close. Wind & air movement: Increased movement of the air around a plant will result in a higher transpiration rate.

Detailed explanation-4: -When the stomata are open, some of the water, which was originally absorbed into the plant through its roots from soil, is also lost to the atmosphere in the form of water vapor. The process of liquid water evaporating to form water vapor and leaving the plant via pores like the stomata is called transpiration.

Detailed explanation-5: -Capillary action occurs because water is sticky, thanks to the forces of cohesion (water molecules like to stay close together) and adhesion (water molecules are attracted and stick to other substances).