Select incorrect match

Options

A. Marginal placentation - pea
B. Free central placentation - Dianthus and Primrose
C. Basal placentation - sunflower,
D. Parietal placentation- mustard, marigold

Answer

To solve the question of selecting the incorrect match regarding placentation, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Marginal Placentation**:
- Marginal placentation occurs when the placenta forms a ridge along the ventral suture of the ovary.
- In this type, the ovules are attached along this ridge.
- **Match**: Marginal placentation is correctly matched with the plant "P".
- **Conclusion**: This option is correct.

2. **Understanding Free Central Placentation**:
- Free central placentation is characterized by the placenta forming on the central axis of the ovary, with no septa present.
- This type of placentation is found in plants like Dianthus and Primrose.
- **Match**: Free central placentation is correctly matched with Dianthus and Primrose.
- **Conclusion**: This option is also correct.

3. **Understanding Basal Placentation**:
- In basal placentation, the placenta develops at the base of the ovary.
- This type is found in plants such as sunflower, marigold, wheat, and maize.
- **Match**: Basal placentation is correctly matched with sunflower.
- **Conclusion**: This option is correct.

4. **Understanding Parietal Placentation**:
- Parietal placentation occurs when ovules develop on the inner walls of the ovary.
- This type is present in mustard, but marigold is known for basal placentation, not parietal.
- **Match**: Parietal placentation is incorrectly matched with marigold.
- **Conclusion**: This is the incorrect match.

### Final Answer:
The incorrect match is **the fourth option: Parietal placentation with marigold**.

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