Assertion :- Movement of water through xylem tracheids and vessels is apoplastic transportation.
Reason:- Xylem tracheids and vessels are nonliving conduits.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false

Answer

To solve the question, we need to analyze both the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Movement of water through xylem tracheids and vessels is apoplastic transportation."
- Apoplastic transport refers to the movement of water and solutes through the cell walls and intercellular spaces, bypassing the cytoplasm of cells. In the case of xylem, water does indeed move through the cell walls and spaces between cells, which aligns with the definition of apoplastic transport.

2. **Understanding the Reason**:
- The reason states that "Xylem tracheids and vessels are nonliving conduits."
- This statement is true. Xylem tracheids and vessels are indeed nonliving structures that facilitate the transport of water and minerals from the roots to the rest of the plant.

3. **Evaluating the Relationship**:
- We need to determine if the reason provided is a correct explanation of the assertion.
- Since xylem vessels and tracheids are nonliving and are responsible for the transport of water, this supports the assertion that the movement of water through them can be classified as apoplastic transport.

4. **Conclusion**:
- Both the assertion and the reason are true, and the reason correctly explains the assertion.
- Therefore, the correct answer is: **Both assertion and reason are true, and reason is the correct explanation of assertion**.

### Final Answer:
The correct option is **Option 1**.

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