Which of the following is correct about mammalia testes ?

Options

A. Graafian follicles, Sertoli cells, Leydig's cells
B. Graafian follicles, Sertoli cells, Seminiferous tubule
C. Sertoli cells, Seminiferous tubules, Leydig's cells
D. Graafian follicle, Leydig's cells, Seminiferous tubule

Explanation

To answer the question regarding which of the following statements is correct about mammalian testes, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding the Role of Testes**:
- The testes are the primary male reproductive organs in mammals. Their main function is to produce sperm through a process called spermatogenesis.

2. **Identifying Key Components**:
- The testes contain several important structures:
- **Sertoli Cells**: These cells provide nourishment and support to developing sperm cells.
- **Leydig Cells** (also known as interstitial cells): These cells produce testosterone, which is crucial for the development of male secondary sexual characteristics.
- **Seminiferous Tubules**: These are the structures within the testes where spermatogenesis occurs.

3. **Evaluating the Options**:
- **Option 1**: Graphene follicles, Sertoli cells, and Leydig cells.
- Incorrect because graphene follicles are related to female reproductive organs (ovaries).
- **Option 2**: Graphene follicle, Sertoli cells, and seminiferous tubule.
- Incorrect for the same reason as above; graphene follicles are not present in testes.
- **Option 3**: Sertoli cells, seminiferous tubule, and Leydig cell.
- Correct because it includes only the components that are present in the testes.
- **Option 4**: Graphene follicle, Leydig cell, and seminiferous tubule.
- Incorrect because it includes the graphene follicle, which is not found in the testes.

4. **Conclusion**:
- Based on the evaluation, the correct answer is **Option 3**: Sertoli cells, seminiferous tubule, and Leydig cell.