DENDROLOGY

Detailed explanation-1: -Transpiration is ultimately the main driver of water movement in xylem. The cohesion-tension model works like this: Transpiration (evaporation) occurs because stomata are open to allow gas exchange for photosynthesis.

Detailed explanation-2: -Mechanism Driving Water Movement in Plants The bulk of water absorbed and transported through plants is moved by negative pressure generated by the evaporation of water from the leaves (i.e., transpiration)-this process is commonly referred to as the Cohesion-Tension (C-T) mechanism.

Detailed explanation-3: -Transpiration is the driving force that moves water through the plant. Transpiration is the evaporation of water from the of water from the surface of leaf cells in actively growing plants. This water is replaced by additional absorption soil leading to a continuous column of water in the plant’s xylem.

Detailed explanation-4: -The water eventually is released to the atmosphere as vapor via the plant’s stomata-tiny, closeable, pore-like structures on the surfaces of leaves. Overall, this uptake of water at the roots, transport of water through plant tissues, and release of vapor by leaves is known as transpiration.

Detailed explanation-5: -The major driving force for transport of water through xylem in plants during the day is transpiration which creates transpiration pull and during the night is root pressure due to the absence of transpiration.