Why do higher animals possess specialized organs for gas exchange instead of relying on their skin?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Biology Mcqsbiology-mcqs
Published
6 Mar 2020
Last updated
28 May 2026

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Explanation

Higher animals have thick skin, which limits gas exchange through it. Therefore, they have developed specialized organs like lungs or gills to efficiently carry out the exchange of gases.

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