Which of the following structure is homologous to penis ?

Options

A. mons pubis
B. labia majora
C. labia minora
D. Clitoris

Answer

To determine which structure is homologous to the penis, we need to analyze the options provided in relation to their anatomical and developmental origins.

### Step-by-Step Solution:

1. **Understanding Homologous Structures**: Homologous structures are those that share a common ancestry, even if they have different functions in adults. In this case, we are looking for a female structure that is homologous to the male penis.

2. **Analyzing the Options**:
- **A. Mons Pubis**: This is a fatty tissue cushion located above the pubic bone, covered by skin and pubic hair. It does not have a direct homologous relationship with the penis.
- **B. Labia Majora**: These are the outer folds of tissue that extend from the mons pubis. While they are external genitalia, they are not homologous to the penis.
- **C. Labia Minora**: These are the inner folds of tissue that lie beneath the labia majora. They are also not homologous to the penis.
- **D. Clitoris**: This is a small, finger-like structure located at the upper junction of the labia minora. It is rich in nerve endings and is involved in sexual arousal. The clitoris is considered homologous to the penis because both structures develop from the same embryonic tissue.

3. **Conclusion**: Based on the analysis, the structure that is homologous to the penis is the **clitoris**.

### Final Answer:
**D. Clitoris**