Tissues are a group of cells similar in structure and functions. There are two main types of plant tissues — meristematic tissues and permanent tissues. Meristemetic tissues undergo active cell division while the permanent tissues do not undergo any division.
Meristems are areas in plants where repeated mitosis occurs, and due to this cell division, it is also where growth occurs more.
Depending on the region where they are present, meristematic tissues are classified as apical, lateral and intercalary.
An apical meristem or growing tip is at the tip of a plant’s stem or root, which is responsible for vertical growth of the plants.
Lateral meristems can be found at the tip of lateral growths in the plant.
Intercalary meristems can be found between the places at which leaves attach, and leaf bases, especially of certain monocotyledons, common in grasses.