Why apical intercalary meristems are called primary meristems?

Explanation

**Step-by-Step Solution:**

1. **Definition of Meristematic Tissue**: Begin by understanding what meristematic tissue is. Meristematic tissues are regions in plants where cells are actively dividing. These tissues are responsible for the growth of the plant.

2. **Types of Meristems**: There are three main types of meristems based on their location:
- **Apical Meristem**: Located at the tips of roots and shoots, responsible for vertical growth.
- **Intercalary Meristem**: Found at the base of leaves or internodes, contributing to the elongation of these parts.
- **Lateral Meristem**: Located along the sides of the stem and roots, responsible for increasing the girth of the plant.
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