Question
A student compares annelids and arthropods. An annelid hydrostatic skeleton differs from an arthropod exoskeleton because it:
Select an option. Your answer will be checked instantly.
Correct Answer: A. Uses internal fluid pressure instead of a rigid outer cuticle
Explanation:
Annelids rely on fluid-filled compartments and muscle contractions, whereas arthropods rely on a rigid external cuticle with jointed appendages.
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