Question:
Which of the following animal has a three-chambered heart?
Which of the following animal has a three-chambered heart?
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Fish (2) $\rightarrow$ Amphibians/Reptiles (3) $\rightarrow$ Birds/Mammals (4).
Updated On: Jun 10, 2026
- Pteropus
- Scoliodon
- Hippocampus
- Chelone
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Circulatory system complexity across vertebrate classes.
Step 2: Analysis
* *Pteropus* (Mammal): 4-chambered. * *Scoliodon* (Fish): 2-chambered. * *Hippocampus* (Fish): 2-chambered. * *Chelone* (Reptile): 3-chambered heart (incomplete 4-chambered).
Step 3: Conclusion
*Chelone* possesses the three-chambered heart typical of most reptiles.
Final Answer: (D)
Circulatory system complexity across vertebrate classes.
Step 2: Analysis
* *Pteropus* (Mammal): 4-chambered. * *Scoliodon* (Fish): 2-chambered. * *Hippocampus* (Fish): 2-chambered. * *Chelone* (Reptile): 3-chambered heart (incomplete 4-chambered).
Step 3: Conclusion
*Chelone* possesses the three-chambered heart typical of most reptiles.
Final Answer: (D)
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