Root pressure develops due to

In tall plants,because of which factor,does a continuous water column extend upward?

Root pressure is due to

Which one of the following is the most accepted theory of ascent of sap?

Absorption of water by root is increased by

Given below are two statements about the ascent of sap in plants.
$Statement-I$: Under normal conditions, the sap in the xylem cells shows negative hydrostatic pressure.
$Statement-II$: It also shows high osmotic pressure.
In the light of the above statements, select the correct option given below: