harleynicole06 harleynicole06

03-02-2020
Biology

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What does echinoderms mean

Respuesta :

Jenirelle Jenirelle

09-02-2020

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

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