Xylem - GCSE Biology Definition

Xylem is a type of plant tissue that transports water and mineral ions from the roots to the rest of the plant, including the leaves and stems. It is made up of long, hollow, dead cells that form continuous tubes, allowing water to move efficiently upwards through the plant. Xylem also provides structural support to help keep the plant upright. The movement of water through the xylem is essential for photosynthesis, as it supplies water to the leaves, where this occurs.