Question

The movement of water and minerals in xylem and the movement of phloem sap in phloem is ............... and .................... respectively

• A. Unindirectional, bidirectional
• B. Bidirectional, bidirectional
• C. Bidirectional, unidirectional
• D. Unindirectional, unidirectional

Answer 1

The correct option is A Unindirectional, bidirectional

The movement of water and minerals in xylem and the movement of phloem sap in phloem is unidirectional and bidirectional respectively. Plants need water for their growth, and it uptakes water through the roots. Water that is taken by the roots has to reach all the leaves or branches, here the xylem function as transportation of water. Therefore, the movement of water and minerals in xylem is always an unidirectional. Whereas, the movement of phloem is bidirectional this is because, once the food is synthesized it is the phloem that transfers the food to all the parts of plants wherever it is necessary.

So, the correct answer is option A.