What are meristematic tissues? Explain with the help of suitable diagram. Give their classification on the basis of their position in the plant body.

Meristematic tissue: It is a group of cells which constantly divide and produce cells indefinitely throughout the life of a plant. Meristematic tissue is found in all the growing parts of a plant such as root tip, shoot tip, etc.

On the basis of their locations in the plant body, meristematic tissues are classified into three categories:

(a) Apical meristem

(b) Intercalary meristem

(c) Lateral meristem