In highly organised plants, there are two different types of conducting tissues known as xylem and phloem. Also known as vascular bundles, these permanent complex tissues are made up of both living cells and non-living cells. They play a central role in the plant's transport system. Xylem conducts water and minerals obtained from the soil (via roots) to different parts of the plant body. Their movement is unidirectional. Xylem transports water only.
Phloem transports food materials from the leaves to different parts of the plant body. Their movement is bidirectional. They translocate food to various parts of the plant.