Which meristem bring about increase in the girth of trees?

Explanation

To answer the question "Which meristem brings about increase in the girth of trees?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand Meristematic Tissue**:
- Meristematic tissues are groups of undifferentiated cells in plants that have the ability to divide continuously. These cells can either remain as meristematic tissue or differentiate into specialized cells.

2. **Types of Growth**:
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