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 related to placentation, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understand the Types of Placentation**:
- **Marginal Placentation**: Found in unilocular ovaries where the placenta forms a ridge along the ventral suture. Example: Pea (Pisum sativum).
- **Free Central Placentation**: Occurs in unilocular ovaries where ovules are attached to a central axis. Examples: Primrose (Primula) and Dianthus.
- **Basal Placentation**: Involves a unilocular ovary with a single ovule at the base. Examples: Marigold (Tagetes) and Sunflower (Helianthus).
- **Parietal Placentation**: Found in unilocular ovaries where ovules are attached to the inner walls or peripheral part of the ovary. Examples: Cucurbita and Mustard (Brassica).

2. **Evaluate Each Option**:
- **Option 1 (Marginal - Pea)**: This is correct as marginal placentation is indeed found in pea.
- **Option 2 (Free Central - Primrose/Dianthus)**: This is also correct as both Primrose and Dianthus exhibit free central placentation.
- **Option 3 (Basal - Marigold)**: This is correct as marigold does have basal placentation.
- **Option 4 (Parietal - Mustard/Marigold)**: Here lies the issue. While mustard is correctly matched with parietal placentation, marigold is incorrectly matched as it has basal placentation.

3. **Identify the Incorrect Match**:
- The incorrect match is found in **Option 4**, where marigold is incorrectly associated with parietal placentation instead of basal placentation.

### Final Answer:
The incorrect match is **Option 4** (Parietal - Mustard/Marigold).

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