The Tube Feet of Echinoderms That Are Used for Locomotion

question 18

Multiple Choice

The tube feet of echinoderms that are used for locomotion, capturing prey, and gas exchange are ?inflated? by the_________ , which is unique to the echinoderms.

• A) hydrostatic skeleton
• B) tubular gut
• C) coelom
• D) water-vascular system
• E) hemocoel

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