Question

Assertion Mammals have developed a complex respiratory system.
Reason Mammalian skin is impermeable to gases.

• A. Both Assertion, and Reason are true and Reason is the correct explanation of Assertion
• B. Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion
• C. Assertion is true, but Reason is false
• D. Both Assertion and Reason are false

Answer 1

Answer: (B)

Mammals have developed a complex respiratory system to get more oxygen for maintaing their high metabolic rates. Mammalian skin is impermeable so that water loss through, it is minimised.