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mamaluj [8]
4 years ago
15

What does echinoderms mean

Biology
1 answer:
kykrilka [37]4 years ago
7 0

Explanation:

Echinoderms belong to a very diverse phylum of marine-dwelling invertebrates, which have integral roles in salt water aquatic ecosystems. They comprise brittle stars, starfish, sea-urchins, sand dollars, and sea cucumbers. They have distinct characteristics, they:

  • are only marine animals.
  • show bilateral symmetry as larvae, and radial symmetry as adults
  • show three layers (germ)
  • show complex-level organisation, i.e. organs are seen
  • have a fluid-filled body cavity

Learn more about other phyla at brainly.com/question/9504034

#LearnWithBrainly

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