In unilocular ovary with a single ovule the placentation is

Options

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

Answer

To determine the type of placentation in a unilocular ovary with a single ovule, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- A **unilocular ovary** refers to an ovary that has only one chamber.
- An **ovule** is the structure that develops into a seed after fertilization.

2. **Identify the Options**:
- The options given for the type of placentation are:
- Free
- Central
- Exile
- Marginal
- Basal

3. **Analyze Each Option**:
- **Free Central Placentation**: This occurs in a unilocular ovary where the ovules are attached to the central axis. This is incorrect for a single ovule.
- **Exile Placentation**: Involves multiple locules and is characterized by ovules arranged along the central axis. This is also incorrect as it does not pertain to a unilocular ovary with a single ovule.
- **Marginal Placentation**: This occurs when ovules are attached along the ventral suture of the ovary. This is found in legumes and is incorrect for a single ovule.
- **Basal Placentation**: In this type, the ovary is unilocular and a single ovule is attached at the base of the ovary. This is the correct option.

4. **Conclusion**:
- The correct type of placentation in a unilocular ovary with a single ovule is **Basal Placentation**. This type is commonly found in plants like Marigold and Sunflower.

### Final Answer:
**Basal Placentation**

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