Zygomorphic flower with vexillary aestivation, diadelphous androecium and marginal placentation occurs in

Options

A. Pisum
B. Aloe
C. Brinjal
D. Bellandona

Answer

To solve the question regarding the characteristics of a flower with zygomorphic structure, vexillary aestivation, diadelphous androecium, and marginal placentation, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Key Terms**:
- **Zygomorphic Flower**: A flower that can be divided into two symmetrical halves in one plane only.
- **Vexillary Aestivation**: A type of floral arrangement where the largest petal (the standard) is positioned at the back, and the other petals (wings and keel) are arranged around it.
- **Diadelphous Androecium**: Refers to the condition where the stamens are united into two groups or bundles.
- **Marginal Placentation**: A type of placentation where the ovules are attached along the margin of the ovary.

2. **Identify the Family**:
- The characteristics mentioned (zygomorphic flower, vexillary aestivation, diadelphous androecium, and marginal placentation) are typically found in the **Fabaceae** family (also known as Leguminosae).

3. **Confirm the Characteristics**:
- In the Fabaceae family:
- Flowers are generally zygomorphic.
- They exhibit vexillary aestivation.
- The androecium is often diadelphous, consisting of 10 stamens.
- The placentation is marginal.

4. **Look at the Options**:
- If the options provided include plants like **Pea (Pisum sativum)**, **Brinjal (Solanum melongena)**, and others, the correct answer would be **Pea (Pisum sativum)** as it belongs to the Fabaceae family.

5. **Conclusion**:
- Therefore, the answer to the question is **Pea (Pisum sativum)**, which exhibits all the specified floral characteristics.