Explain why xylem transport is unidirectional and phloem transport bi-directional.
During the increase of a plant, its leaves act because the supply of meals as they perform photosynthesis. The phloem conducts the meals from the supply to the sink (the a part of the plant requiring or storing meals). During spring, this method is reversed because the meals saved withinside the sink is mobilised towards the developing buds of the plant, thru the phloem. Thus, the motion of meals withinside the phloem is bidirectional (i.e., upward and downward). The shipping of water withinside the xylem takes location most effective from the roots to the leaves. Therefore, the motion of water and vitamins withinside the xylem is unidirectional.
