Assertion : Selaginella & Salvinia are homosporous.
Reason : In pteridophyte, Lycopodium is precursor of seed habit

Options

A. (a) If both assertion and reason are true and reason is the correct explanation of assertion.
B. (b) If both assertion and reason are true but reason is not the correct explanation of assertion.
C. (c) If assertion is true but reason is false.
D. (d) If both assertion and reason are false.

Answer

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

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Selaginella and Salvinia are homosporous."
- We need to determine if this statement is true or false.
- **Fact Check**: Selaginella and Salvinia are actually heterosporous plants. Heterosporous plants produce two types of spores: microspores and megaspores.
- **Conclusion**: The assertion is **false**.

2. **Understanding the Reason**:
- The reason states that "In pteridophyte, Lycopodium is a precursor of seed habit."
- We need to evaluate if this statement is true or false.
- **Fact Check**: Lycopodium is indeed a pteridophyte, but it is homosporous, meaning it produces only one type of spore. For a plant to be a precursor of seed habit, it should typically be heterosporous, as seed habit involves retention of the female gametophyte.
- **Conclusion**: The reason is also **false**.

3. **Final Evaluation**:
- Since both the assertion and the reason are false, we conclude that neither statement is correct.
- Therefore, the correct answer is that both the assertion and the reason are incorrect.

### Final Answer:
Both the assertion and the reason are incorrect.