Tyloses are formed in

Options

A. Cortex
B. Secondary xylem
C. Pericycle
D. Tracheary elements

Answer

**Step-by-Step Solution:**

1. **Understanding Tyloses**: Tyloses are outgrowths that occur in the xylem vessels. They are formed from parenchyma cells that invade the xylem vessels.

2. **Function of Tyloses**: The primary function of tyloses is to provide protection to the vascular tissues, especially during times of stress or infection. They help to prevent damage to the plant by blocking the xylem vessels.

3. **Location of Formation**: Tyloses are specifically formed in the secondary xylem. This is where the parenchyma cells can extend into the xylem vessels.

4. **Options Analysis**:
- **Cortex**: This is the outer layer of the stem and root, not where tyloses are formed.
- **Secondary Xylem**: This is the correct answer as tyloses are formed here.
- **Pericycle**: This is a layer of cells just inside the endodermis, not related to tyloses.
- **Trachea Elements**: These are part of the xylem but do not form tyloses.

5. **Conclusion**: Based on the understanding that tyloses are formed from parenchyma cells in the secondary xylem, the correct answer is **secondary xylem**.

**Final Answer**: Tyloses are formed in **secondary xylem**.

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