The number of carpels and locules exist sin 2:1 ratio in the mature ovaries of

Options

A. Capsicum
B. Solanum
C. Datura
D. Dolichos

Answer

To solve the question regarding the number of carpels and locules in the mature ovaries of flowering plants, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Understanding the Terms**:
- **Carpels**: These are the female reproductive structures of a flower, which can be singular or multiple in number.
- **Locules**: These are the chambers within the ovary where ovules are found. The number of locules often corresponds to the number of carpels.

2. **Analyzing the Options**:
- **Capsicum**:
- Capsicum has a bicarpillary ovary, meaning it has 2 carpels.
- Typically, it has 2 locules as well.
- Therefore, the ratio of carpels to locules is 2:1.

- **Solanum**:
- Solanum has a pentacarpillary ovary, which means it has 5 carpels.
- It also has 5 locules.
- The ratio here is 5:5 or 1:1, not 2:1.

- **Datura**:
- Datura also has a pentacarpillary structure, meaning it has 5 carpels.
- It has 5 locules as well, leading to a ratio of 1:1.

- **Dolichos**:
- Dolichos has a monocarpillary ovary, which means it has 1 carpel.
- It has 1 locule, resulting in a ratio of 1:1.

3. **Conclusion**:
- The only plant from the options that maintains a 2:1 ratio of carpels to locules is **Capsicum** (2 carpels and 1 locule).
- Therefore, the correct answer is **Capsicum**.

### Final Answer:
The number of carpels and locules exists in a 2:1 ratio in the mature ovaries of **Capsicum**.

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