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| Q. |
In which vertebrate oxygenated and deoxygenated blood gets mixed |
| A. | Fish |
| B. | Amphibian |
| C. | Bird |
| D. | Mammal |
| Answer» B. Amphibian | |
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Explanation: If the oxygenated blood and deoxygenated blood mixed, then blood would circulate through the body without being fully oxygenated. Also the deoxygenated blood is supposed to take that trip through the lungs to give up the carbon dioxide. |
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