AP BIOLOGY

Detailed explanation-1: -As the temperature increases, the water molecules gain more energy. This means they move around more and therefore they evaporate and diffuse out of the leaf faster. This is why the rate of transpiration increases as the temperature increases.

Detailed explanation-2: -Plants transpire more rapidly at higher temperatures because water evaporates more rapidly as the temperature rises. At 30°C, a leaf may transpire three times as fast as it does at 20°C.

Detailed explanation-3: -Transpiration Rate The rate of transpiration depends on a number of factors: Temperature – warm weather increases the kinetic energy of the water molecules so they move out of the leaf faster. Humidity – damp air reduces the concentration gradient so the water molecules leave the leaf more slowly.

Detailed explanation-4: -Transpiration increases with temperature as transpiration is dependent on liquid water being converted into vapor. The conversion of water into vapor is dependent on the increase in temperature. Also, the pores or stomata on the leaves will open up when temperature increase to release the water vapor.

Detailed explanation-5: -Statement b is false. Transpiration-the loss of water vapor to the atmosphere through stomata-is a passive process, meaning that metabolic energy in the form of ATP is not required for water movement.