Which type of kidneys are found in amphibian`:`

Options

A. Halonephric
B. Mesonephric
C. Pronephric
D. Metanephric

Answer

**Step-by-Step Solution:**

1. **Understanding Kidney Types**: There are three main types of kidneys based on their development: pronephric, mesonephric, and metanephric.

2. **Pronephric Kidneys**: These are the simplest form of kidneys. They do not have a Bowman's capsule and consist of tubular structures only. Pronephric kidneys are typically found in cyclostomes (like lampreys) and are not present in amphibians.

3. **Mesonephric Kidneys**: These kidneys are more advanced than pronephric kidneys. They contain a Bowman's capsule and are characterized by tubular structures. Mesonephric kidneys are primarily found in amphibians.

4. **Metanephric Kidneys**: These are the most advanced type of kidneys. They are well-differentiated, containing a Bowman's capsule, tubular structures, and a loop of Henle. Metanephric kidneys are found in mammals, reptiles, and birds.

5. **Halonephric Kidneys**: These kidneys are considered primitive and consist of tubular structures arranged serially. They are not found in amphibians.

6. **Conclusion**: Based on the information, the type of kidneys found in amphibians is the mesonephric kidneys.

**Final Answer**: Mesonephric kidneys are found in amphibians.

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