Question
An earthworm pushes through soil by changing body shape using fluid-filled compartments. This movement depends mainly on a:
Select an option. Your answer will be checked instantly.
Correct Answer: A. Hydrostatic skeleton
Explanation:
A hydrostatic skeleton uses incompressible body fluid and muscle contractions to change body shape. Earthworms use circular and longitudinal muscles with coelomic fluid for burrowing locomotion.
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