What happens to the growth of cells after differentiation?

Explanation

### Step-by-Step Solution

1. **Understanding Differentiation**: Differentiation is the process by which cells become specialized in structure and function. For example, cells in the root meristem and apical meristem divide and then differentiate into various types of cells such as tracheae, phloem, and xylem.

2. **Post-Differentiation Changes**: After differentiation, the growth of cells undergoes significant changes. The cells that were once similar begin to take on distinct characteristics that allow them to perform specific functions.

3. **Changes in Cell Wall**: One of the major changes that occur after differentiation is in the cell wall. The cell walls of differentiated cells often become thicker and stronger. This is particularly important for cells that need to withstand pressure or provide structural support.

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