Which one of the following pair of reproductive organs does not show homology between males and females ?

Options

A. Glans penis & Clitoris
B. Scrotum & Labia minora
C. Bulbourethral gland & Bartholin's gland
D. Prostate gland & Skene's gland

Answer

To determine which pair of reproductive organs does not show homology between males and females, we need to understand the concept of homologous structures. Homologous structures are those that have a similar embryonic origin and structure but may serve different functions in the male and female reproductive systems.

### Step-by-Step Solution:

1. **Understand Homologous Structures**:
- Homologous organs are those that share a common origin and structure but may differ in function. For example, the testis in males and ovaries in females are homologous structures.

2. **Identify Male and Female Reproductive Organs**:
- In males, the primary reproductive organs include:
- Testis
- Glands (e.g., prostate gland, bulbo-urethral gland)
- Penis (including glans penis)
- Scrotum
- In females, the primary reproductive organs include:
- Ovaries
- Glands (e.g., Bartholin's gland, Skene's gland)
- Clitoris
- Labia (including labia majora and labia minora)

3. **Analyze the Given Options**:
- **Option 1**: Glans penis and clitoris - These are homologous structures.
- **Option 2**: Scrotum and labia minora - The scrotum is homologous to the labia majora, not the labia minora.
- **Option 3**: Bulbo-urethral gland and Bartholin's gland - These are homologous structures.
- **Option 4**: Prostate gland and Skene's gland - These are homologous structures.

4. **Determine the Correct Answer**:
- Since the scrotum is not homologous to the labia minora but rather to the labia majora, **Option 2** is the correct answer as it does not show homology.

### Final Answer:
**Option 2: Scrotum and Labia Minora does not show homology between males and females.**