In fishes, the heart pumps:
Correct answer: D. Impure blood to gills
- A. Pure blood to body
- B. Impure blood to body
- C. Pure blood to gills
- D. Impure blood to gills
Explanation
In fishes, the heart pumps out deoxygenated blood from the body to the gills where it gets oxygenated. The correct answer is 'Impure blood to gills' because fishes have a two-circuit circulatory system that carries deoxygenated blood to the gills for oxygenation before returning it to the body.The other options are incorrect because fishes do not pump pure blood to the body or pure blood to the gills in their circulatory system.
This question appeared on the ETEA MDCAT 2009 paper, which you can sit online with every answer explained.
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