Within multicellular organisms, tissues are organized communities of cells that work together to carry out a specific function. The exact role of a tissue in an organism depends on what types of ...

The Rb protein seems to function similarly in plants and animals to stop cell division and start differentiation in cells that leave the stem cell niche. Polycomb proteins are used to maintain a ...

Plant cells are also able to become longer as they grow. This process is called cell elongation and occurs throughout the plant, not just in the meristems. Cell elongation does not occur in animals.