NEET BIOLOGY

Detailed explanation-1: -The xylem and phloem are two conducting tissues present in plants. Xylem conducts minerals and water only in the upward direction i.e. from the roots towards the stem. The phloem transports food material from leaves to other parts of the plant body. It can conduct food in both directions.

Detailed explanation-2: -Xylem can conduct substances only in one direction, whereas, phloem can transport substances in both directions.

Detailed explanation-3: -Flow in Xylem is unidirectional while in Phloem is bidirectional.

Detailed explanation-4: -Phloem transport is bidirectional because sucrose gets accumulated in the phloem tissue and absorbs water creating a high turgor pressure. Other areas have low turgor pressure due to loss of water.

Detailed explanation-5: -The transportation 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. However, the movement of food in the phloem is bidirectional (both upward and downward).