Question

which type of directional movement is shown by phloem and explain it​

Answer 1

$\huge{\mathfrak{\underline{\red{Answer!}}}}$

Source and Sink- The Bi-directional flow

But in Early Spring when the leaves are shed, the sugar stored in roots mobilize the organic material towards the growing Buds. Here we can see that the direction of the source and sink is reversed. Hence we can say that bidirectional flow of food occurs in the phloem.

Answer 2

Explanation:

Bidirectional

The movement in phloem is bidirectional, whereas, in xylem cells, it is unidirectional (upward). Because of this multi-directional flow, coupled with the fact that sap cannot move with ease between adjacent sieve-tubes, it is not unusual for sap in adjacent sieve-tubes to be flowing in opposite directions.