In a syncarpous unilocular ovary, ovules develop from two opposite lines on the wall . The placentation is

Options

A. Superficial
B. Marginal
C. Axile
D. Perietal

Answer

To determine the type of placentation in a syncarpous unilocular ovary where ovules develop from two opposite lines on the wall, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Ovary Structure**:
- A syncarpous ovary is one that consists of multiple fused carpels.
- A unilocular ovary means that it has only one locule (chamber).

2. **Identifying Ovule Arrangement**:
- The question states that the ovules develop from two opposite lines on the wall of the ovary. This indicates a specific arrangement of ovules.

3. **Recognizing the Implication of the Arrangement**:
- The arrangement of ovules in two opposite lines suggests that the ovary may appear to be bilocular due to the presence of a false septum, known as a replum.

4. **Determining the Type of Placentation**:
- In this scenario, the type of placentation that corresponds to ovules developing along the walls of a unilocular ovary is called **parietal placentation**.
- This is because the ovules are attached to the inner wall of the ovary rather than being located on a central axis or surface.

5. **Conclusion**:
- Therefore, the correct answer to the question is **parietal placentation**.

### Final Answer:
The placentation in a syncarpous unilocular ovary, where ovules develop from two opposite lines on the wall, is **parietal**.

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