$A-$ Diffusion is a very slow process and is responsible for the short-distance movement of molecules.
$R-$ Water,minerals,and food are generally moved by a mass or bulk flow system.

Which of the following is the importance of water to plant life?

Match the following:

Column-$I$	Column-$II$
$(P)$ Active absorption	$(1)$ Loss of water
$(Q)$ Osmotic pressure	$(2)$ Plasmolysis
$(R)$ Stomata	$(3)$ Minerals
	$(4)$ Solute concentration

Given below are two statements in relation to the limitations of the capillarity theory of water transport in plants.
Statement $I$: Xylem, i.e., the capillarity tube, must be with closed end walls and not hollow.
Statement $II$: The capillarity tube, i.e., xylem, is not in direct contact with soil water and contains a barrier of root cells between the xylem and soil water.
In the light of the above statements, choose the most appropriate answer from the options given below:

During which process in leaves is the water potential positive?

In a girdled plant,when water is supplied to the leaves above the girdle,leaves may remain green for some time,then wilt and ultimately die. What does it indicate?