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?

Xylem helps in the translocation of:

Which of the following statements are correct regarding the factors affecting the absorption of water by plants?
$(i)$ In plants,the rate of water absorption is minimum at a soil temperature of $20^{\circ}C$ to $30^{\circ}C$.
(ii) The presence of capillary water is essential in the soil.
(iii) Poorly aerated soil shows a poor absorption rate.
(iv) $A$ low transpiration rate accelerates the rate of absorption of water in irrigated soil.
$(v)$ $A$ high concentration of solutes in soil water reduces the rate of absorption of water.

$A$: Endodermis onwards,the movement of water occurs through the living part of the cell. $R$: The inner boundary of the cortex possesses an impermeable band of lignified matrix.

What is released during guttation?

Give differences between:
$(1)$ Diffusion and Osmosis
$(2)$ Transpiration and Evaporation