Guttation is mainly due to

Why do many transplanted root hairs or seedlings fail to survive?

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

How are water and ions absorbed in roots? Explain with a diagram.

Which of the following are objections to the root pressure theory of ascent of sap in plants?
$I$. It is not applicable to plants taller than $20 \ m$.
$II$. Ascent of sap occurs even in the absence of a root system.
$III$. Root pressure is almost zero in tall gymnosperms.
$IV$. Root pressure is the only mechanism explaining the ascent of sap.
$V$. Root pressure is not developed in actively transpiring plants.

Give scientific reasons:
$(1)$ Ascent of sap is done by $Xylem$ tissue.