Changes

The growth of plants occurs only in certain specific regions. This is because the dividing tissue, also known as meristematic tissue, is located only at these points. Depending on the region where they are present,meristematic tissues are classified as apical,lateral and intercalary. New cells produced by meristem are initially like those of meristem itself, but as they grow and mature, their characteristics slowly change and they become diferentiated as components of other tissues.  

The growth of plants occurs only in certain specific regions. This is because the dividing tissue, also known as meristematic tissue, is located only at these points. Depending on the region where they are present,meristematic tissues are classified as apical,lateral and intercalary. New cells produced by meristem are initially like those of meristem itself, but as they grow and mature, their characteristics slowly change and they become diferentiated as components of other tissues.  

http://media-3.web.britannica.com/eb-media/99/5599-004-D6C19960.gif

http://media-3.web.britannica.com/eb-media/99/5599-004-D6C19960.gif

Apical meristem is present at the growingtips of stems and roots and increases thelength of the stem and the root. The girth ofthe stem or root increases due to lateral meristem (cambium). Intercalary meristem is the meristem at the base of the leaves or internodes (on either side of the node) or twigs.

Apical meristem is present at the growingtips of stems and roots and increases thelength of the stem and the root. The girth ofthe stem or root increases due to lateral meristem (cambium). Intercalary meristem is the meristem at the base of the leaves or internodes (on either side of the node) or twigs.<br>

Cells of the  meristematic tissues show the following features:

Cells of the  meristematic tissues show the following features:

* The cells have thin walls.

* The cells have thin walls.