The best vital force theory was proposed by

Absorption of water by root is increased by

In tall trees,the water column in the xylem does not break due to its weight because of:

Which of the following contributes most to the transport of water from the ground to the leaves of a tall tree? Or,the factor or process which best explains the rise of water from roots to the top of a tall tree is:

Physical force theory explains that:

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.