Invertebrate Phylums

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Arthropoda

(arichnia) jointed feet, exoskeleton, and bilateral symmetry

Porifera

(sponges) aquatic organisms, lack true tissues/organs, asymmetrical, sessile

Cnidaria

( radially symmetrical, digestive cavity with one opening, most with tentacles and stinging cells, aquatic enviroments (ex. coral, sea anemone, jellyfish."

Nematoda

(roundworms) pseudocoelomate, unsegemented, bilaterally symmetrical, tubular digestive tract, without cilia, live in great numbers in soil and aquatic sediments. (ex. heartworms, hookworms.)

Platyhelmenthes

(flatworms) unsegmented, bilaterally symmetrical, no body cavity, if present, has one opening, parastic and free-living species. (ex. tapeworms, fluke.)

Annelida

(segmented worms) coelomate, bilaterally symmetrical, serially segmented, complete digestive tact, setae on each segment, terrestrial and aquatic. (ex.leech, earthworm, polychete)

Echinodermata

marine organisms, spiny or leathery skin, water vascular, system with tube feet, radially symmetrical. (ex. sea star, sea cucumber, sea urchin, sand dollar.)

Mollusca

soft bodied coelomates, body divided into 3 parts: head-foot, visceral mass, and mantle, many have sheels, almost all have a radula, aquatic/terrestrial (ex. snail, clam, slug, and squid)

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