Stem cells

• a stem cell is an undifferentiated cell, capable of becoming any other type of cell
• Embryonic stem cells and adult stem cells are the main types of animal stem cells.
• the 2 main features of stem cells are that they can divide to form more cells and that they can differentiate into specialised cells
• Adult stem cells are found in the bone marrow.
• Embryonic stem cells are found in the embryo
• Adult stem cells can only differentiate into certain types of cells, whereas embryonic stem cells can differentiate into any type of cell
• Meristem tissue are plant tissues that continually grow and contain stem cells.
• Meristem tissue are found in the tips of roots and shoots.
• plants have stem cells throughout all stages of their life.