The correct answer is cell differentiation. Key Points - Plant tissues are of two types, meristematic and permanent.- Meristematic tissues: - The growth of plants occurs only in certain specific regions.- This is because the dividing tissue, also known as meristematic tissue, is located only at these points. - Depending on the region where they are present, meristematic tissues are classified as apical, lateral, and intercalary. - Permanent tissues: - Cells formed by meristematic tissues take up a specific role and lose the ability to divide. - As a result, they form a permanent tissue. - This process of taking up a permanent shape, size, and function is called differentiation. - Cells of meristematic tissue differentiate to form different types of permanent tissue.