Identify the family which shows the following diagnostic features.
Flowers pentamerous, gynoecium-bicarpellary,syncarpous, ovary placed obliquely , placentation axile , placenta swollen.

Options

A. Solanaceae
B. Leguminosae
C. Papilionaceae
D. Liliaceae

Answer

To identify the family of the flowering plant based on the given diagnostic features, we can follow these steps:

### Step 1: Analyze the Features
The question provides specific characteristics of the flower:
- Pentamerous flowers (5 petals)
- Gynoecium is bicarpellary and syncarpous
- Ovary is placed obliquely
- Placentation is axile
- Placenta is swollen

### Step 2: Understand the Terminology
- **Pentamerous**: This indicates that the flower has five parts in its whorls (e.g., petals, sepals).
- **Bicarpellary Syncarpous Gynoecium**: This means there are two carpels that are fused together.
- **Oblique Ovary**: The ovary is positioned at an angle rather than being upright.
- **Axile Placentation**: This type of placentation means that the ovules are attached to the central axis of the ovary.
- **Swollen Placenta**: This indicates that the tissue where ovules are attached is enlarged.

### Step 3: Identify the Family
Given the characteristics, we can deduce that these features are typical of the **Solanaceae** family, commonly known as the potato family.

### Step 4: Confirm with Floral Formula
To confirm, we can write down the floral formula for the Solanaceae family:
- **C** (Calyx) = 5 (fused)
- **R** (Corolla) = 5 (fused)
- **A** (Androecium) = 5 (epipetalous)
- **G** (Gynoecium) = 2 (syncarpous)

### Step 5: Conclusion
Based on the analysis and confirmation with the floral formula, we conclude that the family exhibiting the provided features is the **Solanaceae** family.

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