$A$ plant experiencing rapid transpiration will exhibit which of the following?

The most widely accepted explanation for the ascent of sap in trees is:

Exudation of xylem sap at the cut end of stem is due to . . . . . . pressure.

Which is the most widely accepted theory for the ascent of sap in trees?

Which two statements are wrong for transpiration pull theory?
$(i)$ There is a continuous network of water channels from the root hairs to the tips of the leaves.
$(ii)$ Due to adhesive force between molecules of water,the water column has a great tensile strength.
$(iii)$ There is a cohesive force between the wall of the xylem vessels and water.
$(iv)$ Transpiration pull is strong enough to pull up the column of water to a great height.

Which one is against the theory of ascent of sap given by Dixon and Jolly?