Ascent of sap is due to which force
The most Important force which pulls water up in tall trees is

Options

A. Imbibition
B. Cellular force
C. Cohesive force
D. Atmospheric pressure

Answer

C

Explanation

As a result of transpiration a water saturation deficit result in the walls of leaf mesophyll cell. This water deficit is a carrier from cell to cell until it reaches the leaf xylem from there to stem xylem and finally to root hairs through the root xylem. This allows cohesion of water molecules to form water column to allow upward transport of water