Water reaches the top of a plant due to

$A$ mutant plant is unable to produce materials or precursors that form the Casparian strip. This plant would be:

Water enters which part of the root first?

Keeping a freshly cut leafy twig in a $fuchsin$ solution reveals that:

The continuous excretion of watery substance from the stump of a well-watered pot plant after cutting off the shoot slightly above the base is due to:

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