Question

Transport in xylem is always while transport in phloem is .

• A. unidirectional
• B. bidirectional
• C. towards apex
• D. lateral

Answer 1

Answer: (A), (B)

bidirectional

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. The movement of food in the phloem is bidirectional (both upward and downward), the organic solutes may be transported from the leaves where they are synthesized to the roots, where they are stored. Or it may be moved from the storage organs like roots, stem etc. to the apical or lateral meristems during growth.