How does the water vascular system allow an echinoderm to move along the ocean floor?

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04-02-2021
Biology

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How does the water vascular system allow an echinoderm to move along the ocean floor?

Sagot :

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marema95 marema95 · Answer 1 · 2021-02-12T22:54:16-05:00

Answer: Sample Response: Water gets into the water vascular system through an opening in the echinoderm's body. When the animal contracts its muscles, the water is forced through the system and into the tube feet. The tube feet act as suction cups, gripping the surface below. When the echinoderm retracts its muscles, the tube feet retract and let go of the surface. This series of contractions and retractions allows the animal to move along the ocean floor.

Explanation: just had the question but sorry if wrong.

barbd9611 barbd9611 · Answer 2 · 2022-02-03T13:54:46-05:00

Water gets into the water vascular system through an opening in the echinoderm's body. When the animal contracts its muscles, the water is forced through the system and into the tube feet. The tube feet act as suction cups, gripping the surface below. When the echinoderm retracts its muscles, the tube feet retract and let go of the surface. This series of contractions and retractions allows the animal to move along the ocean floor.

sample response I got from the practice

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