Assertion: Polyploidy is very common in the member of Filicophyta.
Reason: It is due to the development of gametophytes directly from sporophyte without meiospore formation.

Options

A. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B. If both Assertion and Reason are true, but the Reason is not the correct explanation of the 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 the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding Polyploidy**:
- Polyploidy refers to a condition in which a cell has more than two paired sets of chromosomes. This is common in many plants, including those in the Filicophyta group (ferns).
- **Hint**: Recall what polyploidy means and its significance in plant biology.

2. **Analyzing the Assertion**:
- The assertion states that "Polyploidy is very common in the members of Filicophyta." This is true as many ferns exhibit polyploidy, which contributes to their diversity and adaptability.
- **Hint**: Think about examples of plants that are polyploid and their classification.

3. **Understanding Gametophyte Development**:
- The reason given is that "it is due to the development of gametophytes directly from sporophytes without meiospore formation." This means that in Filicophyta, the gametophyte generation can develop directly from the sporophyte, bypassing the typical meiosis that would normally produce spores.
- **Hint**: Consider the life cycle of ferns and how the sporophyte and gametophyte generations interact.

4. **Analyzing the Reason**:
- The reason is also correct. The direct development of gametophytes from sporophytes without meiospore formation can lead to gametophytes having multiple sets of chromosomes, which supports the assertion about polyploidy.
- **Hint**: Reflect on how the life cycle of ferns differs from that of other plants, particularly regarding meiosis.

5. **Conclusion**:
- Since both the assertion and reason are true, and the reason provides a correct explanation for the assertion, we conclude that the assertion is justified by the reason.
- **Hint**: Review the connections between the assertion and reason to ensure clarity in understanding their relationship.

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