Seminiferous tubuleous occur in :

Options

A. Liver
B. kidney
C. Ovary
D. Testis.

Answer

To answer the question "Seminiferous tubules occur in:", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure**: Seminiferous tubules are coiled structures that are crucial for the process of spermatogenesis, which is the formation of sperm.

2. **Identify the Location**: These tubules are specifically located within the male reproductive system.

3. **Review the Options**: The options given are:
- A) Liver
- B) Kidney
- C) Ovary
- D) Testes

4. **Eliminate Incorrect Options**:
- **Liver**: This organ is involved in metabolism and detoxification, not in the production of sperm.
- **Kidney**: This organ is responsible for filtering blood and producing urine, not related to sperm production.
- **Ovary**: This is part of the female reproductive system, where eggs are produced, not sperm.

5. **Identify the Correct Answer**: The only option left is D) Testes. The testes are the male reproductive organs where seminiferous tubules are located, and they play a key role in producing sperm and hormones like testosterone.

6. **Conclusion**: Therefore, the correct answer to the question is option D) Testes.

### Final Answer:
**D) Testes**

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