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