What is the role of secondary meristems in the body of some plants?

Options

A. Secondary growth
B. Primary growth
C. Intercalary growth
D. Apical growth.

Answer

**Step-by-Step Solution:**

1. **Understanding Meristems**: Begin by defining what meristems are. Meristems are regions in plants where cells are actively dividing, leading to growth. They are classified into primary and secondary meristems.

2. **Types of Meristems**: Identify the two main types of meristems:
- **Primary Meristems**: Responsible for primary growth, which increases the length of the plant.
- **Secondary Meristems**: Also known as lateral meristems, these are responsible for secondary growth.

3. **Role of Secondary Meristems**: Explain the function of secondary meristems. They contribute to secondary growth, which results in an increase in the girth or thickness of the plant stems and roots. This is crucial for the plant's structural support and overall stability.

4. **Examples of Secondary Meristems**: Mention specific types of secondary meristems, such as:
- **Cork Cambium**: Produces the outer protective layer (cork) of the plant.
- **Vascular Cambium**: Produces new layers of xylem and phloem, contributing to the plant's vascular system.

5. **Conclusion**: Summarize that the primary role of secondary meristems is to facilitate secondary growth, which enhances the plant's girth and supports its structural integrity.

**Final Answer**: The role of secondary meristems in the body of some plants is primarily to facilitate secondary growth, which increases the stem girth or thickness.

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