Meristematic Tissue: Primary Meristem, Cambium, and Pericyle
Primaty Meristems: actively dividing cells located in buds of shoot and in root tips of plants. Produce the primary tissues along the plant axis throughout the life of the plant.
Pericyle: layer of meristematic cells outisde the vascular cylinder in the root. Divide to produce lateral branch roots.
Vascular Cambium: lateral meristem composed of small dividing cells that are located between xylem and phloem vascular tissue. Divide to produce secondary growth which increase in girth.
Cork Cambium: meristem located just inside the cork layer of a woody plant. Divide to produce secondary growth.