Which one of the following diagrams represents the placentation in Dianthus

Options

A.
B.
C.
D.

Answer

To solve the question regarding which diagram represents the placentation in Dianthus, we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Placentation**:
- Placentation refers to the arrangement of ovules within the ovary of a flower. It is crucial for the transfer of nutrients and water from the maternal tissue to the developing embryo.

2. **Identify Types of Placentation**:
- There are several types of placentation, including:
- Marginal: Ovules are attached along the margin of the ovary.
- Parietal: Ovules are attached to the inner wall of a single-chambered ovary.
- Axile: Ovules are attached to a central axis in a multilocular ovary.
- Free central: Ovules are attached to a central axis but are free from the ovary walls.

3. **Analyze Each Diagram**:
- Go through each of the provided diagrams to identify which type of placentation they represent:
- **First Diagram**: Represents marginal placentation.
- **Second Diagram**: Represents parietal placentation.
- **Third Diagram**: Represents axile placentation.
- **Fourth Diagram**: Represents free central placentation.

4. **Identify the Correct Type for Dianthus**:
- The type of placentation found in Dianthus is free central placentation. This means that the ovules are borne on a central axis within the ovary.

5. **Select the Correct Diagram**:
- Based on the analysis, the diagram that represents free central placentation is the one corresponding to Dianthus.

### Final Answer:
The diagram that represents the placentation in Dianthus is the one depicting free central placentation.

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