The factors which responsible for ascent of xylem sap are:
(1) Cohesion – It is the mutual attraction between water molecules which causes upward movement of water.
(2) Surface tension – It causes the attraction of water molecules. Due to this the surface tension increases causing the high capillarity of water.It is more in water in
liquid state than in gaseous state.
(3) Adhesion – It is the attraction of water molecules to the polar molecules like the teachers' elements. All these factors cause high tensile strength and high capillarity.Answered by Abhisek | 11 months ago