Assertion: In gymnosperms the seeds that develop post fertilisation are naked.
Reason: In gymnosperms ovules are not enclosed by any ovary wall.

Options

A. If both assertion and Reason are true and the reason is a correct explanation of the assertion.
B. If both Assertion and Reason are true but Reason is not a correct explanation 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 in gymnosperms, the seeds that develop post-fertilization are naked. This means that the seeds are not covered by any protective layer.

2. **Evaluating the Reason**:
- The reason provided is that in gymnosperms, ovules are not enclosed by any ovary wall. This indicates that the ovules, which develop into seeds after fertilization, are exposed and not protected by any structure.

3. **Connecting Assertion and Reason**:
- Since the ovules are exposed and not enclosed by any ovary wall, it logically follows that the seeds that develop from these ovules will also be naked. This supports the assertion.

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

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

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