Identify the incorrect statement.

Options

A. The testes are situated outside the abdominal cavity
B. The male germ cells undergo mitotic divisions
C. The interstitial space of seminiferous tubule contains Leydig cells which secrete testosterone
D. Testicular hormone are called androgens

Answer

To solve the question "Identify the incorrect statement," we need to analyze each of the provided statements related to male reproductive anatomy and physiology.

### Step-by-Step Solution:

1. **Statement Analysis**:
- **Statement A**: "The testes are situated outside the abdominal cavity."
- This statement is **correct**. The testes are located in the scrotum, which is outside the abdominal cavity. This positioning is important for temperature regulation necessary for sperm production (spermatogenesis).

2. **Statement B**: "Male germ cells undergo mitotic divisions."
- This statement is **incorrect**. Male germ cells (spermatogonia) undergo **meiotic** divisions to produce haploid sperm cells. They do not primarily undergo mitotic divisions for the purpose of forming sperm.

3. **Statement C**: "The interstitial space of seminiferous tubules contains Leydig cells which secrete testosterone."
- This statement is **correct**. Leydig cells, located in the interstitial space of the seminiferous tubules, are responsible for the production and secretion of testosterone, which is crucial for male reproductive functions.

4. **Statement D**: "Testicular hormones are called androgens."
- This statement is **correct**. The hormones produced by the testes, including testosterone, are classified as androgens, which are responsible for the development of male characteristics.

5. **Conclusion**:
- After analyzing all statements, the only **incorrect statement** is **Statement B**: "Male germ cells undergo mitotic divisions."

### Final Answer:
The incorrect statement is **B**: "Male germ cells undergo mitotic divisions."