Testicular degenration and other disorders of reproductive system in mammals are due to the deficiency of :-

Options

A. Vitamin D
B. Vitamin B
C. Vitamin K
D. Vitamin E

Answer

To solve the question regarding the cause of testicular degeneration and other disorders of the reproductive system in mammals, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Key Terms**: The question mentions "testicular degeneration" and "disorders of the reproductive system." We need to focus on what deficiencies might lead to these conditions.

2. **Review the Options**: The options given are:
- Vitamin D
- Vitamin B
- Vitamin K
- Vitamin E

3. **Analyze Each Vitamin**:
- **Vitamin D**: Known for its role in calcium metabolism and bone health. Deficiency can lead to rickets, not directly related to reproductive health.
- **Vitamin B**: This group of vitamins is associated with various metabolic processes. Deficiencies can lead to conditions like pernicious anemia and pellagra, but not specifically to reproductive disorders.
- **Vitamin K**: Primarily involved in blood clotting. Deficiency leads to bleeding disorders, not reproductive issues.
- **Vitamin E**: This vitamin is crucial for reproductive health, particularly in males. It is known to enhance sperm health and motility. A deficiency in vitamin E can lead to male infertility and testicular degeneration.

4. **Conclusion**: Based on the analysis, the vitamin that is linked to testicular degeneration and reproductive disorders in mammals is **Vitamin E**.

5. **Final Answer**: The deficiency of Vitamin E leads to testicular degeneration and other disorders of the reproductive system in mammals.