HORTICULTURE

Detailed explanation-1: -The cohesion-tension model works like this: Transpiration (evaporation) occurs because stomata are open to allow gas exchange for photosynthesis. As transpiration occurs, it deepens the meniscus of water in the leaf, creating negative pressure (also called tension or suction).

Detailed explanation-2: -The cohesive forces present between the water molecules keeps them together and provides stability to them. The adhesive forces help the water molecules to stick to other surfaces like glasses, leaves, or any other plant surfaces. The water molecules stick to these surfaces and thus do not runoff.

Detailed explanation-3: -The typical plant, including any found in a landscape, absorbs water from the soil through its roots. That water is then used for metabolic and physiologic functions. 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.

Detailed explanation-4: -Transpiration creates a force that pulls on the water upward through the xylem, and water molecules pull other water molecules with them. Since they are attracted to the sides of the xylem, adhesion makes them travel up the sides of the vessels.