Kidney of Frog is

Options

A. Archinephros
B. Pronephros
C. Mesonephros
D. Metanephros

Answer

To answer the question "Kidney of Frog is," we need to analyze the types of kidneys present in various vertebrates and identify which one corresponds to frogs.

### Step-by-Step Solution:

1. **Understand the Types of Kidneys**:
- There are four main types of kidneys in vertebrates:
- **Pronephros**: The first stage of kidney development, usually found in embryos.
- **Mesonephros**: The functional kidney in many aquatic vertebrates and the embryonic kidney in higher vertebrates.
- **Metanephros**: The permanent kidney found in higher vertebrates, including mammals.
- **Archinephros**: The primitive kidney found in some of the earliest vertebrates.

2. **Identify the Type of Organism**:
- Frogs are classified as amphibians, which can live both in water and on land.

3. **Excretory System of Frogs**:
- The excretory system of frogs includes a pair of kidneys, ureters, cloaca, and urinary bladder.
- Frogs are uricotelic, meaning they primarily excrete urea.

4. **Locate the Correct Type of Kidney**:
- In frogs, the kidneys that are present are the mesonephros. This is consistent with their classification as amphibians and their developmental stage.

5. **Conclusion**:
- Based on the information gathered, the correct answer to the question is that the kidney of the frog is **mesonephros**.

### Final Answer:
The kidney of the frog is **mesonephros**.

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