Why apical intercalary meristems are called primary meristems?

Options

A. They form primary plant body
B. They form secondary plant body
C. They are apical in position
D. They are formed from permanent tissue.

Answer

**Step-by-Step Solution:**

1. **Understanding Meristems:**
- Meristems are regions in plants where cells continuously divide and contribute to growth. They are classified into two main types: primary and secondary meristems.

2. **Identifying Apical Meristems:**
- Apical meristems are located at the tips of roots and shoots. They are responsible for the vertical growth of the plant and give rise to primary permanent tissues.

3. **Defining Intercalary Meristems:**
- Intercalary meristems are found between the regions of permanent tissue, specifically at the internodes of stems. They are derived from apical meristems and contribute to the elongation of the plant.

4. **Why They Are Called Primary Meristems:**
- Both apical and intercalary meristems are classified as primary meristems because they contribute to the formation of the primary plant body. This primary plant body includes all the tissues that develop from the primary growth of the plant.

5. **Conclusion:**
- Apical intercalary meristems are called primary meristems because they are involved in the formation of the primary plant body, which is essential for the initial growth and development of the plant.

**Final Answer:**
Apical intercalary meristems are called primary meristems because they contribute to the formation of the primary plant body.

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