Which Statement About the Respiratory Organs of Animals Is True

question 247

Multiple Choice

Which statement about the respiratory organs of animals is true?

• A) Most water-breathing animals have lungs.
• B) Most air-breathing animals have gills.
• C) External gills are highly branched, thin extensions that maximize diffusion distance.
• D) Lungs are usually unpaired and elastic.
• E) The respiratory organs of air-breathing insects are called tracheae.

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