In which reptiles 4-chambered heart is present?

Answer

To answer the question regarding which reptiles possess a four-chambered heart, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Class Reptilia**:
- The class Reptilia includes various reptiles that are characterized by their creeping locomotion and dry, cornified scales.

2. **General Heart Structure in Reptiles**:
- Most reptiles typically have a three-chambered heart, which consists of two atria and one ventricle. This is the common structure found in the majority of reptilian species.

3. **Identifying the Exception**:
- While most reptiles have a three-chambered heart, there is an exception within this class. The crocodile, which is also classified under reptiles, possesses a four-chambered heart.

4. **Conclusion**:
- Therefore, the reptile that has a four-chambered heart is the crocodile.

### Final Answer:
The reptile that possesses a four-chambered heart is the **crocodile**.

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