Which Feature Characterizes Hydrostatic Skeletons

question 202

Multiple Choice

Which feature characterizes hydrostatic skeletons?

• A) Found primarily in vertebrates
• B) Consist of a fluid-filled body cavity surrounded by a stiff cuticle
• C) Require molting when the animal grows
• D) Used by clams in locomotion
• E) Contraction of one set of muscles causes the fluid-filled body cavity to bulge in the opposite direction.

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