<P> Meristemetic tissue cells have a large nucleus with small or no vacuoles, they have no inter cellular spaces . </P> <P> Permanent tissues may be defined as group of living or dead cells formed by meristematic tissue and have lost their ability to divide and have permanently placed at fixed positions in the plant body . Meristematic tissues that take up a specific role lose the ability to divide . This process of taking up a permanent shape, size and a function is called cellular differentiation. Cells of meristematic tissue differentiate to form different types of permanent tissues . There are 3 types of permanent tissues: </P> <Ol> <Li> simple permanent tissues </Li> <Li> complex permanent tissues </Li> <Li> special or secretory tissues (glandular). </Li> </Ol> <Li> simple permanent tissues </Li>

A tissue is composed of a single type of cell