Placentation in Brassicaceae (mustard) family is

Options

A. Parietal
B. Marginal
C. Axile
D. Basal

Answer

### Step-by-Step Solution:

1. **Understanding Placentation**:
- Placentation refers to the arrangement of ovules within the ovary of a flower. The ovules are the structures that develop into seeds after fertilization.

2. **Identifying the Types of Placentation**:
- There are several types of placentation, including:
- **Parietal**: Ovules are attached to the inner walls of a single-chambered ovary.
- **Marginal**: Ovules are attached along the margins or ridges of the ovary.
- **Axial**: Ovules are attached to a central axis within a multi-chambered ovary.
- **Basal**: Ovules are attached at the base of the ovary.

3. **Analyzing the Brassicaceae Family**:
- The question specifically asks about the placentation in the Brassicaceae family, commonly known as the mustard family.

4. **Determining the Correct Type**:
- In the Brassicaceae family, the type of placentation observed is **parietal**. This means that the ovules are attached to the inner walls of the ovary, even though it appears that there may be multiple chambers, there is actually only one.

5. **Conclusion**:
- Therefore, the correct answer to the question regarding the type of placentation in the Brassicaceae family is **parietal**.

### Final Answer:
**Parietal**

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