NEET BIOLOGY

Detailed explanation-1: -Transpiration is the process through which plants lose water through stomata. Stomata are usually present on the underside of the leaves. It is essentially evaporation of water from the leaves of the plants.

Detailed explanation-2: -Ensuring the cooling of plant – the loss of water in the form of water vapour from plants helps the plant to cool down during hot days. Transpirational pull-which is a result of evaporation of water from surfaces of leaves through stomata. This pull helps water to be drawn up in the xylem vessels.

Detailed explanation-3: -A plant does not use most of the water that it absorbs. About 97-99% of the water is lost through transpiration. Transpiration is defined as the physiological loss of water in the form of water vapor, mainly from the stomata in leaves, but also through evaporation from the surfaces of leaves, flowers, and stems.

Detailed explanation-4: -Notes: Desert plants lose very little water through transpiration. The leaves in desert plants are either absent, very small, or they are in the form of spines. This helps in reducing loss of water from the leaves through transpiration.

Detailed explanation-5: -Transpiration is the evaporation of water from plants occurring at the leaves while their stomata are open for the passage of CO2 and O2 during photosynthesis.