8 Major Animal Phyla

By: Brady Moore

#1 Cnidara

Jellyfish. Body has a cardiovascular cavity, radially symmetrical, has tentacles, and body wall is diploblastic.
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#2 Annelida

Earthworms. No true respiratory organs, true-closed circulatory system, eats wide range of material, live in most environments.
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#3 Porifera

Sponges. Multicellular, sedentary in nature, a majority are marine, is cylindrical, has radial symmetry
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#4 Nematoda

Roundworms. Bilaterally symmetrical, has more than two cell layers, tissues, and organs. No circulatory system, eats almost anything, the body is covered in a complex cuticle.
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#5 Chordata

Amphibians, reptiles, mammals, humans, notochord, dorsal hollow nerve cord, post-anal tail, pharyngeal slits
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#6 Echinodermata

Starfish. 5-rayed symmetry, mostly radial, sometimes bilateral, true coelom, all live marine in environments
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#7 Arthropoda

All insects, spiders, crabs, lobsters, have jointed legs and exoskeletons, open circulatory system
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#8 Mollusca

Snails, clams, shelled body without cavity, reproduction normally sexual and gonochoristic
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