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प्रश्न
In which of the following groups of organisms, blood flows through the heart only once during one cycle of passage through the body?
पर्याय
Rabbit, Parrot, Turtle
Frog, crocodile, Pigeon
Whale, Labeo, Penguin
Shark, dogfish, stingray
MCQ
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उत्तर
Shark, dogfish, stingray
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