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Frog has two-chambered heart....

Frog has two-chambered heart.

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### Step-by-Step Solution: 1. **Understanding the Heart Structure of Frogs**: - Frogs belong to the class Amphibia. They are not reptiles; rather, they are amphibians. 2. **Identifying the Heart Chambers**: - Frogs possess a three-chambered heart, which consists of two atria and one ventricle. 3. **Function of the Heart Chambers**: - The right atrium receives deoxygenated blood from the body, while the left atrium receives oxygenated blood from the lungs. Both atria empty into the single ventricle. 4. **Blood Mixing**: - Due to the presence of only one ventricle, there is a mixing of oxygenated and deoxygenated blood within the ventricle. This is a characteristic feature of the three-chambered heart. 5. **Conclusion**: - Therefore, the statement "Frog has a two-chambered heart" is incorrect. Frogs have a three-chambered heart. ### Final Answer: Frogs have a three-chambered heart, not a two-chambered heart. ---
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