Assertion Xylem tracheids are dead and lignified even then they allow movement of water form cell to cell
Reason Xylem tracheids possess ptis and cell to cell movement of water occurs through them

Options

A. If both Assertion and Reason are true and the Reason is a correct expanation of the Assertion
B. If both Assertion and Reason re true but Reason is not a correct eplanatin of the Assertion
C. If Assertion is true but the Reason is false
D. If both Assertion and Reason are false

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Xylem tracheids are dead and lignified, yet they allow the movement of water from cell to cell."
- This is true because xylem tracheids, despite being dead at maturity, form a continuous system that facilitates the transport of water.

2. **Understanding the Reason**:
- The reason states that "Xylem tracheids possess pits, and cell-to-cell movement of water occurs through them."
- This is also true. The pits in xylem tracheids allow water to move from one tracheid to another, enabling the overall movement of water through the xylem.

3. **Connecting Assertion and Reason**:
- Both the assertion and the reason are true statements.
- The reason provides an explanation for the assertion: the presence of pits in the tracheids is what allows the movement of water, despite the tracheids being dead.

4. **Conclusion**:
- Since both the assertion and the reason are true, and the reason correctly explains the assertion, we conclude that the correct answer is that both the assertion and reason are true, and the reason is the correct explanation of the assertion.

### Final Answer:
Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

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