In man kidney is

Options

A. Pronephros
B. Mesonephros
C. Metanephors
D. None of the above

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks about the type of kidney present in humans (man).

2. **Evaluating the Options**: There are three types of kidneys mentioned:
- Pro nephros
- Mesonephros
- Metanephros

3. **Analyzing Pro nephros**:
- Pro nephros is the earliest nephric stage found in vertebrates.
- It is not the mature kidney in humans; rather, it is present in primitive vertebrates.
- **Conclusion**: Pro nephros is incorrect for humans.

4. **Analyzing Mesonephros**:
- Mesonephros develops from mesonephric tubules formed from the intermediate mesoderm.
- It is present during early embryonic life (4 to 8 weeks) but degenerates afterward.
- Parts of the mesonephros may persist, but it is not the functional kidney in adults.
- **Conclusion**: Mesonephros is also incorrect for humans.

5. **Analyzing Metanephros**:
- Metanephros arises from the caudal region of the mesonephros and is the last stage of kidney development.
- It is the permanent and functional kidney present in higher vertebrates, including humans.
- It is derived from the intermediate mesoderm.
- **Conclusion**: Metanephros is the correct answer for the type of kidney present in humans.

6. **Final Answer**: The kidney in humans is the **metanephros**.

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