The cambium is a thin layer of living cells found between the xylem and phloem in vascular tissues.
Function:
The cambium is responsible for secondary growth in plants — it produces new xylem and phloem cells, helping the stem and root grow thicker over time.
- The cells on the inside of the cambium form secondary xylem (wood).
- The cells on the outside form secondary phloem (part of the bark).
This activity increases the diameter of stems and roots and helps improve water and nutrient transport as the plant grows older.
In short, the cambium helps plants grow in thickness and maintain efficient transport of food and water.