Which of of these parts in the complex permanent tissue to involve the transport of water is different from the rest ?

Options

A. tracheid
B. Vessel
C. Xylem fibers
D. Xylem parenchyma

Answer

To solve the question regarding which part of the complex permanent tissue involved in the transport of water is different from the rest, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Tissue**: The question refers to the complex permanent tissue involved in the transport of water, which is the xylem.

2. **List the Components of Xylem**: The xylem consists of four main components:
- Tracheids
- Vessels
- Xylem fibers
- Xylem parenchyma

3. **Determine the Function of Each Component**:
- **Tracheids**: These are elongated cells that help in the conduction of water and minerals.
- **Vessels**: These are also conducting elements that facilitate the transport of water.
- **Xylem Fibers**: These are dead cells that provide mechanical support and strength to the plant.
- **Xylem Parenchyma**: This is a living tissue involved in storage, secretion, and sometimes photosynthesis.

4. **Identify the Living vs. Dead Cells**:
- Tracheids and vessels are composed of dead cells, which lose their cytoplasm during maturation.
- Xylem fibers are also dead cells that provide structural support.
- Xylem parenchyma is the only living component among these.

5. **Conclusion**: Since the question asks for the part that is different from the rest in terms of being involved in the transport of water, the answer is **xylem parenchyma**. This is because it is the only living component, while the others (tracheids, vessels, and fibers) are dead.

### Final Answer:
The part of the complex permanent tissue involved in the transport of water that is different from the rest is **xylem parenchyma**.

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