Vexillary aestivation is characteristic of th family

Options

A. Solanaceae
B. Brassicaceae
C. Fabaceae
D. Asteraceae

Answer

### Step-by-Step Solution:

1. **Understanding Vexillary Aestivation**:
- Vexillary aestivation refers to a specific arrangement of petals in a flower where one petal (the vexillum) is larger and stands upright, while the other petals are arranged around it. This type of aestivation is commonly found in certain plant families.

2. **Identifying the Families**:
- The question provides several plant families: Solanaceae, Brassicaceae, Fabaceae, and Asteraceae. We need to determine which of these families exhibits vexillary aestivation.

3. **Analyzing Each Family**:
- **Solanaceae**: This family is characterized by velvet aestivation, not vexillary.
- **Brassicaceae**: Members of this family have valvate aestivation, which is also not vexillary.
- **Fabaceae**: This family is known for having imbricate and vexillary aestivation. This indicates that it is a correct answer.
- **Asteraceae**: This family exhibits valvate aestivation, similar to the Brassicaceae.

4. **Conclusion**:
- After analyzing the characteristics of each family, it is clear that the **Fabaceae** family is the one that exhibits vexillary aestivation.

### Final Answer:
The family that is characteristic of vexillary aestivation is **Fabaceae**.

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