Testes descend into scrotum in mammals for

Options

A. Spermatogenesis
B. Fertilization
C. Development of sex organs
D. Development of visceral organs .

Answer

**Step-by-Step Solution:**

1. **Understanding the Function of Testes:**
- The primary function of the testes in mammals is to produce male gametes, known as spermatozoa. This process is called spermatogenesis.

2. **Temperature Requirement for Spermatogenesis:**
- Spermatogenesis requires a temperature that is slightly lower than the normal body temperature of mammals. The optimal temperature for this process is about 2 to 2.5 degrees Celsius lower than the body temperature.

3. **Body Temperature of Mammals:**
- Mammals are warm-blooded (homeothermic) animals, meaning they maintain a constant body temperature regardless of the surrounding environment. For instance, humans have a body temperature of approximately 37 degrees Celsius.

4. **Location of Testes:**
- To achieve the necessary lower temperature for spermatogenesis, the testes descend from the abdominal cavity into a pouch-like structure called the scrotum or scrotal sac. This external location allows the testes to be kept at a cooler temperature than the internal body temperature.

5. **Conclusion:**
- The descent of the testes into the scrotum is essential for maintaining the optimal temperature required for the production of sperm. This adaptation is crucial for successful reproduction in mammals.

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