Multiple choice

Both the skin and the lungs act as respiratory organs in ______________.

  1. amphibians

  2. fish

  3. insects

  4. molluscs

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A Correct answer
Explanation

Both the lungs and the skin serve as respiratory organs in amphibians. The skin of these animals is highly vascularized and moist, with moisture maintained via secretion of mucous from specialized cells. While the lungs are of primary importance to breathing control, the skin's unique properties aid rapid gas exchange when amphibians are submerged in oxygen-rich water.

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