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Phylum


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Porifera
Struc: Mesophyl, Epidermis, Pores, Spongocoel, Choanocytes, Osculum (opening) Func: Filter seawater through pores & capture nutrients How: Why: i.e.
Cnidaria
Struc: Diploblastic (ectoderm & endoderm), mesoglea (jelly), gastrovascular cavity, polyps & medusa, cnidocyte to sting Func: Capture prey, mouth & anus How: Why: i.e. Jellies, sea anenomones, Star corals
Platyhelminthes
Struc: Triploblastic (Ecto, meso, endoderm), acoelomate, pharynx, ganglia Func: Diffusion of gases and ammonia, digestion How: Why: i.e. Tapeworms, trematodes
Rotifera
Struc: Triploblastic, mouth, stomach, anus, pseudocoelom, tiny animals Func: Capture microorganisms suspended in water, digest How: Why: i.e. Bdeloidea
Lophophtrochozoa (superphylum)
Struc: Sessile, triploblastic, coelom lined by mesoderm, lophophore (crown of ciliated tentacles) Func: Digest microorganisms How: Why: i.e. Ectoprocts, brachiopods
Mollusca
Struc: Muscular foot, visceral mass, mantle, mouth, stomach, anus, radula Func: Radula scrapes food How: Why: i.e. Chitons, gastropods (snails, slugs), bivalves (oysters, clams), cephalopods (octopuses, squids)
Annelida
Struc: Coelom, mouth, stomach, anus, blood with hemoglobin Func: Nutrient processing How: Why: i.e. Errantians, sedentarians, leeches
Nematoda
Struc: Complete digestive system, pseudocoelom, cuticle (exoskeleton) Func: Ecdysis (molting), burrow into host tissue How: Why: i.e. Trichinella spiralis, various crop pests
Arthropoda
Struc: Complete digetion, HOX (Ubx and Abd-A) genes, segmented body, hemolymph in hemocoel Func: Uneven segmentation, circulation How: Why: i.e.
Chelicerata (subphylum)
Struc: Complete digestion, chelicerae pincers or fangs, hemolymph Func: Defense and catch prey, circulation How: Why: i.e. Scorpions, spiders, ticks, mites
Myriapoda (subphylum)
Struc: Complete digestion, poison claws on foremost trunk, hemolymph Func: Paralyze prey and defense How: Why: i.e. Millipede, centipede
Crustacea (subphylum)
Struc: Two pairs antenae, soft section of cuticle for gas exchange and nitrogenous waste, swimming larval stage, hemolymph Func: Sensing, defense, gas waste exchange, circulation How: Why: i.e. Crabs, lobsters, shrimps, barnacles
Hexapoda (subphylum)
Struc: Complex organ system, wings extension of cuticle, larval stage, Func: Sexual reproduction, eggs layed on food, metamorphosis (incomplete nymphs resemble adults, complete other form), flight How: Why: i.e. insects, grasshoppers, caterpillars/butterflies.
Echinodermata
Struc: Deuterostome, water vascular system, larva is bilateral Func: Anus and mouth, hydraulic canals to tube feet, How: Why: i.e. Asteroidea: sea stars and sea daisies, Ophiuroidea: Brittle star, Echinoidea: Sea urchins and sand dollars, Crinoidea: Sea lillies and feather stars, Holothuroidea: Sea cucumbers
Nemertea
Struc: Flat, proboscis Func: Feeding How: Why: i.e. Lineus longissimus longest animal in world
Acanthocephala
Struc: Barbed eversible proboscis Func: Latch on to host intestines How: Why: i.e. Polymorphus spp infect seabirds with intermediate crab host
Gastrotricha
Struc: Covered in hairs Func: Locomotion How: Why: i.e. gastrotrich - hairy stomach
kinorhyncha
Struc: Segmented, ring of spines Func: Locomotion How: Why: i.e. Greek for moving snout
Loricifera
Struc: Hard outer case Func: protection on substrate How: Why: i.e. Latin-armour bearer
Priapula
Struc: Extensible proboscis Func: Feeding How: Why: i.e. Fertility god Priapus
Sipuncula
Struc: Proboscis Func: Feeding How: Why: i.e. Food in Phillipines