NEET BIOLOGY

Detailed explanation-1: -Therefore, the movement of water and nutrients in the xylem is unidirectional. The movement of food in the phloem is bidirectional (both upward and downward), these organic solutes may be transported from the leaves where they are synthesized to the roots, where they are stored.

Detailed explanation-2: -The transport of water in the xylem takes place only from the roots to the leaves. Therefore, the movement of water and nutrients in the xylem is unidirectional.

Detailed explanation-3: -Translocation of water and minerals in xylem depends on the transpirational pull and root pressure. Therefore, it is unidirectional due to transpiration pull being developed from roots to leaves. Translocation in phloem is bi-directional: Translocation of food in phloem depends on the source and sink relationship.

Detailed explanation-4: -Xylem can conduct substances only in one direction, whereas, phloem can transport substances in both directions.

Detailed explanation-5: -Phloem transport is bidirectional because sucrose gets accumulated in the phloem tissue and absorbs water creating a high turgor pressure.