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प्रश्न
Which of the following has a three-chambered heart?
पर्याय
pigeon
lizard
fish
lion
MCQ
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उत्तर
lizard
Explanation:
A lizard (reptile) has a three-chambered heart with two atria and one ventricle. Birds (pigeons) and mammals (lions) have four-chambered hearts, while fish have a two-chambered heart.
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