Here's a breakdown:
* Xylem is a type of vascular tissue found in plants. It's responsible for transporting water and dissolved minerals from the roots to the rest of the plant.
* Xylem vessels are long, narrow, and hollow cells that are stacked end-to-end, forming a continuous tube.
* The cells in xylem vessels are dead, which means they lack internal structures like cytoplasm and organelles, making them hollow. This hollowness allows for efficient water transport.
* The walls of xylem vessels are thickened with lignin, a strong and rigid material, which gives them structural support and prevents collapse.
In summary: Water travels up the plant through the hollow xylem vessels.
