Stem cells and meristemsSpec 2.8
A stem cell is an undifferentiated cell. It can divide to make more cells and can differentiate to become specialised cells.
| Type | Function |
|---|---|
| Embryonic stem cells | Found in early embryos. They can differentiate into any type of cell, so they produce all the specialised cells as the embryo develops. |
| Stem cells in animals (adult stem cells) | Found in some tissues, such as bone marrow. They can differentiate into only a limited range of cell types. They replace cells that are damaged or worn out, for example bone marrow makes new blood cells. |
| Meristems in plants | Found at the tips of roots and shoots. The cells divide and can differentiate into any type of plant cell, so the plant can keep growing throughout its life. |