Xylem is the vascular tissue found in vascular plants.
The structure of xylem includes vessels, tracheids, fibres and xylem parenchyma. Tracheids and vessels are distinguished by their shape. It also contains xylem parenchyma and fibres.
The main function of the xylem is to transport water and minerals from the soil to other parts of the plant. It is basically diffusion of substances from one cell to another cell.
The water transporting cells of mature xylem are dead cells.