Assertion:- Gametophyte of homosporous pteridophyte does not depend on sporophytic body.
Reason:- In homosporous pteridophytes there is ex situ or exosporic spore germination.

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 analyze the assertion and reason provided in the question, we will break down the statements step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "the gametophyte of homosporous pteridophyte does not depend on the sporophytic body."
- In homosporous pteridophytes, the gametophyte is indeed an independent structure. It develops from spores and does not rely on the sporophyte for nutrition or support.

2. **Understanding the Reason**:
- The reason states that "in homosporous pteridophytes there is ex situ or exosporic spore germination."
- Exosporic germination means that the gametophyte develops outside the spore. This is characteristic of homosporous pteridophytes, where the spores germinate and grow into independent gametophytes.

3. **Evaluating the Truth of the Statements**:
- Both the assertion and the reason are true. The gametophyte indeed does not depend on the sporophyte, and the spore germination is exosporic.

4. **Determining the Relationship Between Assertion and Reason**:
- While both statements are true, the reason does not serve as a correct explanation for the assertion. The independence of the gametophyte is a characteristic feature of its life cycle, but the reason provided about spore germination does not directly explain why the gametophyte is independent.

5. **Conclusion**:
- Therefore, the correct option is: "Both Assertion and Reason are True but Reason is not the correct explanation of Assertion."

### Final Answer:
Both Assertion and Reason are True but Reason is not the correct explanation of Assertion.

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