Role of the Xylem (Edexcel IGCSE Biology: Double Science)
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LáraExpertise
Biology Lead
Xylem
- The roots, stem and leaves form a plant organ system for the transport of substances around the plant
- Plants also possess two specialist transport vessels called the xylem and phloem
- The xylem and phloem are arranged throughout the root, stem and leaves in groups called vascular bundles
Structure and function of the xylem
- Xylem vessels transport water and minerals (pronounced: zi-lem) from the roots to the stem and leaves
- The xylem has some key structural features
- It is composed of dead cells which form hollow tubes
- Xylem cells are strengthened by lignin and so are adapted for the transport of water in the transpiration stream
Structure of xylem vessel.
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