Assertion:The placentation in which the placenta forms a ridge along the ventral suture of ovary and ovules are borne on this ridge forming two rows is called parietal placentation.
Reason:The marginal placentation has ovules developed on the inner wall of the ovary or on peripheral part.

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 assertion and reason are false.

Explanation

To solve the question, we need to analyze the assertion and reason provided, and determine their validity.

### Step-by-Step Solution

1. **Understanding the Assertion**:
- The assertion states that "the placentation in which the placenta forms a ridge along the ventral suture of the ovary and ovules are borne on this ridge forming two rows is called parietal placentation."
- This statement is incorrect. The correct term for this type of placentation is "marginal placentation," where the ovules are arranged along the edge or ridge formed at the ventral suture of the ovary.

2. **Understanding the Reason**:
- The reason states that "the marginal placentation has ovules developed on the inner wall of the ovary or on the peripheral part."
- This statement is also incorrect. In marginal placentation, the ovules are indeed positioned along the margin or edge of the ovary, but it is not accurate to say they develop on the inner wall or peripheral part as described.

3. **Conclusion**:
- Since both the assertion and the reason are incorrect, we conclude that both statements are false. Therefore, the answer to the question is that both the assertion and reason are false.

### Final Answer
Both the assertion and the reason are false.

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