AIIMS 2014 Zoology Respiratory System MCQ Question
Assertion Mammals have developed a complex respiratory system. Reason Mammalian skin is impermeable to gases.
Both Assertion and Reason are true and Reason is the correct explanation of Assertion
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false
Correct Answer
Detailed Explanation
The correct answer is B because while it is true that mammals have developed a complex respiratory system to efficiently exchange gases, the reason provided— that mammalian skin is impermeable to gases—does not explain why this complexity exists. Mammals rely on their lungs for respiration due to the impermeability of their skin, but this characteristic does not directly justify the complexity of their respiratory systems.
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