8 Major Animal Phyla
By: Brady Moore
Jellyfish. Body has a cardiovascular cavity, radially symmetrical, has tentacles, and body wall is diploblastic.
Earthworms. No true respiratory organs, true-closed circulatory system, eats wide range of material, live in most environments.
Sponges. Multicellular, sedentary in nature, a majority are marine, is cylindrical, has radial symmetry
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.
Amphibians, reptiles, mammals, humans, notochord, dorsal hollow nerve cord, post-anal tail, pharyngeal slits
Starfish. 5-rayed symmetry, mostly radial, sometimes bilateral, true coelom, all live marine in environments
All insects, spiders, crabs, lobsters, have jointed legs and exoskeletons, open circulatory system
Snails, clams, shelled body without cavity, reproduction normally sexual and gonochoristic