What type of placentation of seen in sweet pea

Options

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

Answer

### Step-by-Step Solution:

1. **Understanding Placentation**:
- Placentation refers to the arrangement of ovules within the ovary of a flower. It is crucial for the development of seeds and can vary among different plant species.

2. **Identifying the Options**:
- The question provides four options for the type of placentation:
- A) Pre-central
- B) Marginal
- C) Basal
- D) Excentric

3. **Analyzing Sweet Pea**:
- The sweet pea (genus Lathyrus) is known for its specific type of placentation. We need to determine which type it exhibits.

4. **Recognizing Marginal Placentation**:
- In marginal placentation, ovules are attached along the margin of the ovary. This is distinct from other types of placentation, where the ovules may be located at different positions within the ovary.

5. **Conclusion**:
- After analyzing the characteristics of sweet pea and understanding the types of placentation, we conclude that sweet pea exhibits **marginal placentation**.

6. **Final Answer**:
- The correct answer is **B) Marginal**.