Concept:Xylem is the plant vascular tissue that conducts water and dissolved minerals from the roots upward to the stem and leaves.
Explanation:The arrows in the diagram represent the direction of movement of materials in a plant.
Water absorbed by the roots must travel through the xylem to reach the stem and leaves.
This movement is unidirectional, flowing from the root upwards.
Among the arrows shown, the arrow labelled IV correctly indicates this upward movement in the xylem.
The other arrows represent different processes, such as food transport in the phloem or loss of water, so they do not correspond to xylem transport.
Answer:Transportation in the xylem is represented by arrow IV, which is option D.
