Biology · Circulatory System
Which of the following statements accurately describes the difference in blood circulation between fishes and other vertebrates like mammals?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Blood passes through the heart once in a single circulation loop in fishes, and twice in a double circulation loop in mammals.✓
- 2Blood passes through the heart twice in fishes and only once in mammals.
- 3Blood flows through the heart in exactly the same pathway in both fishes and mammals.
- 4Fishes lack a heart completely.
Correct answer
Blood passes through the heart once in a single circulation loop in fishes, and twice in a double circulation loop in mammals.
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