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Ayushree
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Asked: 2025-10-09T03:57:34+00:00 In:

How many chambers are there in the heart of the following organisms? How is mixing of oxygenated and deoxygenated blood prevented in their body? (i) Fishes (ii) Humans

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(i) Fish: Two-chambered heart; oxygenated and deoxygenated blood mix before reaching tissues.
(ii) Humans: Four-chambered heart prevents mixing, ensuring separate circulation of oxygenated and deoxygenated blood for efficient oxygen supply.

cbse sample paper 2025

cbse sample paper 2025-26 class 10 science

cbse sample paper 2025cbse sample paper 2025-26 class 10 sciencechambers are there in the heart of the following organisms
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