Peculiar feature in the ovary of Brassicacease is presence of

Options

A. Parietal placentation
B. False septum
C. Bilocular ovary
D. Both A and B.

Answer

### Step-by-Step Solution

1. **Identify the Family**: The question asks about a peculiar feature in the ovary of the Brassicaceae family, which is commonly known as the mustard family.

2. **Understand the Ovary Structure**: The ovary in the Brassicaceae family is typically described as bicarpillary, meaning it has two carpels. It is also syncarpous, which indicates that the carpels are fused together.

3. **Determine the Type of Ovary**: The ovary is classified as superior, meaning it is positioned above the attachment of other floral parts.

4. **Examine the Locularity**: The ovary is primarily unilocular (having one chamber), but in some cases, it can be bilocular (having two chambers).

5. **Identify the Cause of Bilocularity**: The bilocular condition arises due to the presence of a false septum within the ovary. This false septum is referred to as the "replum."

6. **Conclude the Unique Feature**: Therefore, the peculiar feature in the ovary of the Brassicaceae family is the presence of the replum, which acts as a false septum.

### Final Answer
The peculiar feature in the ovary of Brassicaceae is the presence of a false septum known as the replum.

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