Which is the living component of xylem?

Options

A. Tracheids
B. Xylem fibre
C. Xylem parenchyma
D. Trachea

Explanation

**Step-by-Step Solution:**

1. **Understanding Xylem**: Xylem is a type of complex tissue found in vascular plants. It is responsible for the transport of water and nutrients from the roots to other parts of the plant.

2. **Components of Xylem**: Xylem is made up of several types of cells, each with different functions. The main components include:
- Tracheids
- Xylem fibers
- Xylem parenchyma

3. **Identifying Living and Dead Cells**:
- **Tracheids**: These are elongated cells that are dead at maturity. They help in the conduction of water and provide structural support.
- **Xylem Fibers**: These are also dead cells that provide strength and support to the xylem.
- **Xylem Parenchyma**: This is the only living component of xylem. These cells are involved in storage and can also assist in the conduction of water.

4. **Conclusion**: Among the components of xylem, the only living cell is the xylem parenchyma. Therefore, the answer to the question "Which is the living component of xylem?" is **xylem parenchyma**.

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