Living elements of xylem are

Options

A. Tracheids
B. Vessels
C. Xylem fibres
D. Xylem parenchyma

Answer

### Step-by-Step Solution:

1. **Understanding Xylem Composition**:
- Xylem is a type of tissue in vascular plants responsible for the conduction of water and minerals from the roots to the rest of the plant.
- It consists of several components, including xylem vessels, tracheids, fibers, and parenchyma.

2. **Identifying Living vs. Non-Living Components**:
- Among the components of xylem, we need to differentiate between living and non-living elements.
- Xylem vessels and tracheids are primarily responsible for water transport but are non-living at maturity.
- Xylem fibers provide structural support and are also non-living.

3. **Identifying the Living Element**:
- The only living component of xylem is the xylem parenchyma.
- Xylem parenchyma is involved in storage and can also assist in the transport of water and nutrients.

4. **Conclusion**:
- Therefore, the living element of xylem is the **xylem parenchyma**.