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Invertebrates, Mollusks, Arthropods and Echinoderms
Arthropod
Arthropod definition: An invertebrate with an exoskeleton, jointed legs, and segmented body, like any insect, spider, crab etc.
Related Terms
Antenna
Anus
Bilateral Symmetry
Closed Circulatory System
Cnidarian
Echinoderm
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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