The ascent of xylem sap in plants is mainly accomplished by the :
The ascent of xylem sap in plants is mainly accomplished by the :
size of the stomatal aperture
distribution of stomata on the upper and lower epidermis
cohesion and adhesion between water molecules
root pressure
Solution
Ascent of sap in xylem is mainly due to transpiration pull which is supported by physical properties of water such as cohesion and adhesion between water molecules. Cohesion is also called Tensile strength of water molecule.