Gynoecium is polycarpellary, apocarpous with half-inferior ovaries in

Options

A. Pea
B. Gulmohar
C. Rose
D. Sunflower

Answer

To determine which plant has a gynoecium that is polycarpellary, apocarpous, and has half-inferior ovaries, we can follow these steps:

### Step 1: Understand the Terms
- **Polycarpellary**: This means that the gynoecium consists of more than one carpel (ovary).
- **Apocarpous**: This indicates that the carpels are free and not fused together.
- **Half-inferior ovary**: This refers to a periginous flower where the ovary is situated in the middle, and the other floral parts (petals and sepals) arise from the rim of the receptacle.

### Step 2: Analyze the Options
1. **Pea (Pisum sativum)**:
- Placentation: Marginal
- Gynoecium: Not polycarpellary (it has a single ovary).
- Conclusion: Not the correct option.

2. **Gulmohar (Delonix regia)**:
- Gynoecium: It is a periginous flower but does not show polycarpellary characteristics.
- Conclusion: Not the correct option.

3. **Rose (Rosa)**:
- Gynoecium: It is polycarpellary (multiple free carpels) and apocarpous (the carpels are free).
- Ovary: Half-inferior, meaning it fits the definition of a periginous flower.
- Conclusion: This is the correct option.

4. **Sunflower (Helianthus)**:
- Gynoecium: It has a hypogynous ovary.
- Conclusion: Not the correct option.

### Step 3: Final Conclusion
Based on the analysis, the plant that has a gynoecium that is polycarpellary, apocarpous, and has half-inferior ovaries is the **Rose**.