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PORIFERA
SPONGES
Simple animalsAsymmetricalSessileNo tissuesFiltering animalsOxygen and nutrients come in through diffusionSexual and asexual reproduction
CNIDARIA
Radial symmetryTentacles sorrounding the mouthOxygen come in through difussionSexual and asexual reproductionPolypoid shape and medusoid shapeJellyfish can swim Polyps are sessile and can form colonies (corals)
PLATYHELMINTES
Bilateral symmetryAbsorb nutrients through the pharynx or through the skinPlanarian live in fresh or salt waterTapeworms are parasites
NEMATODES
Bilateral symmetryParasitesComplete digestive system with mouth and anusSexual reproductionOxygen enters by difussion
ANNELIDS
Segmented wormsComplete digestive systemMost are hermaphroditesOxygen comes through the skinTerrestrial worms swallow dirt and filter out foodSome are parasites and feed on blood
MOLLUSKS
Bilateral symmetryCirculatory systemFilter feeders, grazers, predatorsOxygen taken through gills or lungsMost are aquatic
Bilateral symmetrySegmented bodyExoskeletonOxygen enters through tracheal tubes, gills or book lungsSexual reproductionComplex nervous system
ECHINODERMS
Marine animalsRadial symmetryEndoskeletonAmbulacral system (water circulatory system)Some are predators, some filter feedersSexual reproductionRegeneration possible in some
