In which of the following reptiles, a four- chambered heart is present ?

Options

A. Lizards
B. Snake
C. Scorpion
D. Crocodile

Answer

To determine which reptile has a four-chambered heart, we can analyze the options provided:

1. **Lizard**: Lizards are reptiles that possess a three-chambered heart. This heart consists of two atria and one ventricle. Therefore, this option is incorrect.

2. **Snake**: Similar to lizards, snakes also have a three-chambered heart, which includes two atria and one ventricle. Thus, this option is also incorrect.

3. **Scorpion**: Scorpions are not reptiles; they belong to the phylum Arthropoda. They have a different type of circulatory system and possess a seven-chambered heart. Therefore, this option is incorrect as well.

4. **Crocodile**: Crocodiles are reptiles that possess a four-chambered heart. This heart structure includes two atria and two ventricles, making it more efficient for oxygenated and deoxygenated blood to be separated. Hence, this option is correct.

**Final Answer**: The reptile with a four-chambered heart is the **Crocodile**.

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