What Is Adhesion In Transpiration?

What Is Adhesion In Transpiration? Adhesion: Adhesion is the force of attraction between two particles of different substances (e.g. water molecule and xylem wall) The xylem wall is also polar and hence can form intermolecular associations with water molecules. How is adhesion important for transpiration in plants? Cohesion and adhesion draw water up the xylem.