Kidney and ureter develop from

Options

A. Endodern
B. Mesoderm
C. Ectoderm and mesoderm
D. Mesoderm and endoderm

Answer

To answer the question "Kidney and ureter develop from," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Options**: The question provides four options: endoderm, mesoderm, ectoderm, and combinations of these.

2. **Understand the Development of the Urinary System**: The kidneys and ureters are part of the urinary system. Their development is crucial for understanding human anatomy and physiology.

3. **Recognize the Three Systems**: The kidneys and ureters develop from three overlapping systems:
- Pronephros
- Mesonephros
- Metanephros

4. **Determine the Origin of These Systems**: These three systems are derived from the urogenital ridge, which is also known as the nephrogenic cord.

5. **Identify the Germ Layer**: The urogenital ridge extends from the cervical to the sacral region and is derived from the mesoderm.

6. **Conclude the Correct Answer**: Since the development of the kidneys and ureters originates from the mesoderm, the correct answer to the question is **mesoderm**.

### Final Answer:
The kidney and ureter develop from **mesoderm**.

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