Placentation in Dianthus is

Options

A. Axile
B. Free central
C. Marginal
D. Parietal

Answer

**Step-by-Step Solution:**

1. **Understanding Placentation**: Placentation refers to the arrangement of ovules within the ovary of a flower. It is important to identify the type of placentation to understand the reproductive structure of the plant.

2. **Identifying Types of Placentation**: The options provided are:
- Axile
- Free Central
- Marginal
- Parietal

3. **Analyzing Each Type**:
- **Marginal Placentation**: Found in plants like peas, where ovules are attached along the margins of the ovary.
- **Axile Placentation**: Found in plants like lemon and tomato, where ovules are arranged around a central axis.
- **Parietal Placentation**: Ovules are attached to the walls of a single-chambered ovary.
- **Free Central Placentation**: Ovules are attached to a central column of tissue, with no septa dividing the ovary into locules.

4. **Specifics of Dianthus**: In the case of Dianthus, the ovules are arranged in a way that they are attached to a central column of tissue, which characterizes free central placentation. The ovary wall surrounds the ovules, and there are no partitions (septa) dividing the ovary into separate chambers.

5. **Conclusion**: Based on the analysis, the correct answer to the question "Placentation in Dianthus is" is **Free Central**.

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