Meristematic tissue is a type of plant tissue responsible for growth. It consists of undifferentiated cells that can divide and develop into various types of specialized cells. This tissue is primarily found in areas of the plant where growth occurs, such as the tips of roots and shoots, known as apical meristems, and in the cambium layer, which contributes to the thickness of stems. There are two main types of meristematic tissue: primary meristems, which are involved in the elongation of the plant, and secondary meristems, which contribute to lateral growth. These tissues play a crucial role in the overall development and regeneration of plants, allowing them to adapt to their environment.