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Invertebrate Chart Phylum Name Meaning/Common Porifera Pore-bearing Cnidaria Stinging cells Platyhelminthes Flatworm Nematoda Roundworms; little thread Bath sponges; vase sponges; tube sponges Anemone; jellyfish; coral; hydra Planaria; tapeworms; flukes Hookworms; pinworms; heartworms; filarial worms absent Two Three Three asymmetrical Radial Bilateral Bilateral Cephalization (if yes, list structures) Coelom absent absent Present (eyespots; central ganglion) Present (head to tail) absent absent Absent Pseudocoelom Early none none Protostome Protostome Filter feeders Gastrovascular cavity; extracellular digestion; paralyzes prey Gastrovascular cavity Scavengers; carnivores Carnivores; grasp food with mouth parts Gastrovascular cavity; pharynx; gut Tube-within-a-tube; two openings; one-way tract None; diffusion None; diffusion None; diffusion Diffusion through body wall None; diffusion None; diffusion None; diffusion None; diffusion Diffusion by individual cells Diffusion by individual cells Flame cells Diffusion None Nerve net Ganglia; eyespots; nerve cord Nerve ring; nerves that extend length of body Spicules Hydrostatic pressure Cilia; muscle cells Hydrostatic skeleton; longitudinal muscles Sexual: hermaphrodites; asexually (budding, gemmules) Sexual: hermaphrodites (external fertilization); asexually (budding) Sexual: hermaphrodites; asexually (regeneration) Sexual: separate sexes; internal fertilization Name Examples (atleast 2) # of Germ Layers Body Symmetry Development Feeding Method Digestive Structures Respiratory Choanocytes; intracellular digestion Structures Circulatory System (Open or Closed) (also list structures) Excretory Structures Nervous Structures Support Structures Reproduction Method & Fertilization Phylum Name Meaning/Common Little ring Annelida Class Gastropoda Stomach foot 2 shells Class Bivalvia Class Cephalopoda Head-foot Examples Earthworms; leeches Snails; slugs Clams; mussels; oysters (atleast 2) # of Octopus; squid; chambered nautilus Three Three Three Three Bilateral Bilateral Bilateral Bilateral Present Present (brain; nerve cords; ganglia) Present (brain; nerve cords) Present (brain; nerve cords) True coelom True coelom True coelom True coelom Protostome Protostome Protostome Protostome Carnivores; scavengers Use radula to scrape food Filter feeders Carnivores; hunt prey, capture with tentacles Mouth, pharynx, esophagus, crop, gizzard, intestine, anus (Many people eat chicken gizzards in Atlanta) Diffusion through skin Radula; siphon; complete digestive tract Complete digestive tract Complete digestive tract Gills; skin Gills Gills Closed; dorsal and ventral aorta; five pumping “hearts” Open; pumping heart Open; pumping heart Open; pumping heart Nephridia Nephridia; anus Nephridia; anus Nephridia; anus Simple brain; nerve cord Ganglia; nerve cords Small ganglia; nerve cord; eyespots Highly developed brain Hydrostatic skeleton; longitudinal muscles; circular muscles Sexual: hermaphrodites; internal fertilization Muscular foot; shell Muscular foot; 2 shells Internal pen Sexual: external fertilization Sexual: external fertilization Sexual: internal fertilization Name Germ Layers Body Symmetry Cephalization (if yes, list structures) Coelom Early Development Feeding Method Digestive Structures Respiratory Structures Circulatory System (Open or Closed) (also list structures) Excretory Structures Nervous Structures Support Structures Reproduction Method & Fertilization Phylum Name Meaning/Common Class Insecta Class Arachnida Class Crustacea Echinodermata Spiny skin To cut Spider Shell Examples Locust; grasshopper; ladybug Spiders; mites; ticks; scorpions Crayfish; lobster; shrimp (atleast 2) # of Sea stars; sand dollars; sea urchins Three Three Three Three Bilateral Bilateral Bilateral radial Present (brain; nerve cords; ganglia) Present (brain; nerve cords) Present (brain; nerve cords) Absent True coelom True coelom True coelom True coelom Protostome Protostome Protostome Deuterostome Mouth parts to ingest food Fangs to paralyze prey; external digestive Chelipeds; mouthparts to capture and eat prey Tube feet; stomach Complete digestive tract Complete digestive tract; chelicerae Complete digestive tract Stomach; digestive glands Tracheae; spiracles Book lungs Gills Skin gills; tube feet Open; pumping heart Open; pumping heart Open; pumping heart Water vascular system; diffusion Malpighian tubules; anus Malpighian tubules; anus Green glands Anus; skin gills Brain; complex and simple eyes; ganglia Brain; complex eyes; ganglia Brain; ganglia Nerve ring; radial nerves; sensory cells Exoskeleton; muscles Exoskeleton; muscles Exoskeleton; muscles Hydrostatic skeleton; water vascular system Sexual: internal fertilization Sexual: internal fertilization Sexual: internal fertilization Sexual: external fertilization; separate sexes Asexual: regeneration Name Germ Layers Body Symmetry Cephalization (if yes, list structures) Coelom Early Development Feeding Method Digestive Structures Respiratory Structures Circulatory System (Open or Closed) (also list structures) Excretory Structures Nervous Structures Support Structures Reproduction Method & Fertilization