Question

Cohesion and adhesion theory is otherwise called

Answer 1

• Cohesion- When two similar substances or molecules experience the force of attraction then this force is known as the cohesion force.
• Adhesion- When two dissimilar substances or molecules experience the force of attraction then this force is known as the adhesion force.
• A transpiration pull could be simply defined as a biological process in which the force of pulling is produced inside the xylem tissue. This force helps in the upward movement of water into the xylem vessels. In this process, loss of water in the form of vapors through leaves is observed. This biological process is carried out in all higher plants and trees as their stems are surrounded by bundles of fine tubes, which are made from a woody material known as xylem.
• Transpiration pull is also known as suction force.
• Transpiration pull is also known as suction force, and it is used to draw water from the roots to the leaves in an upward direction.

The molecules of water show cohesion and molecules of water and vessel wall show adhesion. Because of cohesive and adhesive forces, the water column does not break and is pulled upward by the force called transpiration pull.

Cohesion and adhesion theory is otherwise called transpiration pull.