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Arachnids, crustaceans, insects, and myriapods are ____.
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annelids
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Sponges are ____ (members of the simplest animal phylum).
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arthropods
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Large mammals with hooves (cows and horses) are ____.
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cephalopods
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Nematodes are roundworms. Flukes and tapeworms are ____.
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flatworms
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Cuttlefish, octopuses and squids are ____ (a class of mollusks).
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insects
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The modern human species is classified as Homo ____.
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poriferans
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Earthworms and leeches are ____ (segmented worms).
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sapiens
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Beetles are ____, whereas spiders are arachnids.
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ungulates
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