Reproductive system in humans is derived from

Options

A. Ectoderm
B. Endoderm
C. Mesoderm
D. Ecto-endo-mesoderm

Answer

### Step-by-Step Solution:

1. **Understanding Germ Layers**: In human embryonic development, there are three primary germ layers: ectoderm, mesoderm, and endoderm. These layers are formed during the early stages of embryogenesis.

2. **Identifying the Germ Layers**:
- **Ectoderm**: This layer develops into structures such as the skin, brain, and nervous system.
- **Endoderm**: This layer forms the internal organs, including the digestive tract and associated organs like the stomach and colon.
- **Mesoderm**: This layer is responsible for forming various structures, including connective tissues, muscles, the heart, and the reproductive system.

3. **Focusing on the Reproductive System**: The question specifically asks about the origin of the reproductive system in humans. Among the three germ layers, the mesoderm is the one that gives rise to the reproductive organs.

4. **Conclusion**: Therefore, the reproductive system in humans is derived from the **mesoderm**.

### Final Answer:
The reproductive system in humans is derived from the **mesoderm**.

---