# Three stages of plant growth [phases]

Each cell of plant goes through three phases of growth:

- The first phase is called the embryonic growth, when a cell divides, and in this way increases the number of cells in the meristem tissues.
- This is followed by the stretching phase, when the dimensions of the cells are increased, so it stretches.
- Finally, differentiation phase occurs, when occurs a final cell specialization. Taken from http://worldofschool.org

These three stages of plant growth explain why the study of the growth of an organ has always been a kind of curve. Initially the growth is slow, because when increasing the number of cells the increasing of their size doesn’t occur; then takes place a rapid rise of the curve corresponding to the stretching phase; finally, the curve again starts to run parallel to the abscissa, so at this time there is the third phase of growth, not associated with an increase in body size (diagram 200).

Diagram 200. A large growth curve |

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**Taken from http://worldofschool.org**