AP BIOLOGY

Detailed explanation-1: -Its prime function is to exchange the gases by closing and opening the pores in the leaves. It assists in eradicating excess water from the leaves. It removes oxygen and takes in carbon dioxide at the time of photosynthesis. It assists in monitoring the movement of water via transpiration.

Detailed explanation-2: -Stomata regulate gas exchange between the plant and environment and control of water loss by changing the size of the stomatal pore.

Detailed explanation-3: -Transpiration is a process that involves loss of water vapour through the stomata of plants. The loss of water vapour from the plant cools the plant down when the weather is very hot, and water from the stem and roots moves upwards or is ‘pulled’ into the leaves.

Detailed explanation-4: -Stomata facilitate not only the uptake of CO2 but also the exchange of all gases between the aerial parts of the plant and the atmosphere. Water vapour and oxygen molecules exit the leaf through the same path as CO2 enters, but usually in the opposite direction (Figure

Detailed explanation-5: -Transpiration is gas exchange system in the plants. Mainly, water vapour is lost through this system and it cools down the plant body especially leaves. But some other gases such as oxygen, carbon dioxide etc., are also exchanged through it. There is a separate system of water loss in plants.