AP BIOLOGY

Detailed explanation-1: -Transpiration pull or the suction force is the force which aids in drawing the water upward from roots to leaves. In leaves, some amount of water is used for photosynthesis and excess water is released into the atmosphere through openings called as stomata.

Detailed explanation-2: -The forces of cohesion and adhesion cause the water molecules to form a column in the xylem. Water moves from the xylem into the mesophyll cells, evaporates from their surfaces and leaves the plant by diffusion through the stomata.

Detailed explanation-3: -Transpiration is a passive process. Passive absorption: Passive water absorption does not necessitate the use of metabolic energy. Absorption occurs as a result of metabolic activity such as transpiration.

Detailed explanation-4: -To get water up to all the branches and leaves, the forces of adhesion and cohesion go to work in the plant’s xylem to move water to the furthest leaf.