Question
During a comparative anatomy practical, a student notices that an earthworm body surface stays moist and helps gas exchange. The observation best shows the integument working as a:
Select an option. Your answer will be checked instantly.
Correct Answer: B. Protective and respiratory surface
Explanation:
In many soft-bodied invertebrates, the integument protects the body and also allows cutaneous gas exchange when it remains moist. It is not only a covering; it contributes directly to physiological exchange with the environment.
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