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Invertebrates, Mollusks, Arthropods and Echinoderms
Echinoderm
Echinoderm definition: A marine invertebrate with an internal skeleton and a water vascular system, like a starfish.
Related Terms
Antenna
Anus
Arthropod
Bilateral Symmetry
Closed Circulatory System
Cnidarian
Endoskeleton
Exoskeleton
Insect
Invertebrate
Larva
Lung
Medusa
Metamorphosis
Mollusk
Molting
Open Circulatory System
Polyp
Radial Symmetry
Radula
Tube Feet
Water Vascular System
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