Correct option is D
The Correct Answer is: (D) Materials can move in both directions in xylem.
Explanation:
Xylem is responsible for transporting water and minerals from the roots to the rest of the plant, and it only moves in one direction — from the roots to the leaves.
Xylem is responsible for transporting water and minerals from the roots to the rest of the plant, and it only moves in one direction — from the roots to the leaves.
The flow in xylem is unidirectional, driven mainly by transpiration (evaporation of water from the leaves).
Information Booster:
- Xylem and Phloem: Both xylem and phloem are complex tissues as they are made up of more than one type of cell. Xylem consists of tracheids, vessel elements, and fibers, while phloem consists of sieve tubes, companion cells, and fibers.
- Phloem Function: The phloem is responsible for transporting food (mainly sugars) from the leaves (where it is produced via photosynthesis) to other parts of the plant, including roots, stems, and fruits.
- Xylem Function: The xylem primarily transports water and minerals from the roots to the leaves for processes like photosynthesis.
Additional Information:
- The movement of materials in phloem is bidirectional (can move both up and down), depending on the plant's needs, such as in the case of transporting food from leaves to other parts of the plant.
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