INVERTEBRATE NERVOUS SYSTEMS · INVERTEBRATE NERVOUS SYSTEMS A simple cnidarian An echinoderm...
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INVERTEBRATE NERVOUS SYSTEMS A simple cnidarian An echinoderm (starfish). Not really (= coelenterate), Hydra radially symmetrical. Starfish larvae are bilaterally symmetrical. Image from
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INVERTEBRATE NERVOUS SYSTEMS
A simple cnidarian An echinoderm (starfish). Not really (= coelenterate), Hydra radially symmetrical.
Starfish larvae are bilaterally symmetrical.
Image from
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PLATYHELMINTHS - flatworms.
ARTHROPODS and MOLLUSCS.
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APLYSIA (a sea-slug).
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Dorsal and ventralnerve cords.
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The phylum Chordata also includes all the vertebrates.