Explanation:

Intercalary meristems are present in stems at the base of nodes and leaf blades. Cells of such meristems can divide and form new cells. 
Lateral meristems are vascular cambium and cork cambium. They are responsible for the secondary growth of the plant. They increase plant diameter. 
Apical meristem is present at the tip of root and shoot. Cells of apical meristem divide and give rise to new cells. This process increases the length of root and shoot.