The only living element of xylem tissue

Options

A. Has lignified walls
B. Is absent in monocots
C. Is involved in radial conduction of water
D. Is made up of many cells,fused together

Answer

**Step-by-Step Solution:**

1. **Understanding Xylem Tissue Composition**:
- Xylem tissue consists of various types of cells including tracheids, vessels, xylem fibers, and xylem parenchyma.

2. **Identifying Living Elements**:
- Among these components, it's important to identify which one is living. Tracheids, vessels, and xylem fibers are all dead cells, while xylem parenchyma is the only living component.

3. **Function of Xylem Parenchyma**:
- Xylem parenchyma plays a crucial role in the conduction of water and nutrients. It regulates the movement of water from the roots to other parts of the plant.

4. **Cell Structure**:
- The walls of xylem parenchyma are made of cellulose, which is characteristic of living cells, contrasting with the lignified walls of other xylem components that are dead.

5. **Conclusion**:
- Therefore, the only living element of xylem tissue is **xylem parenchyma**.

**Final Answer**: The only living element of xylem tissue is **xylem parenchyma**.

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