Porifera, Cnidarians, and Platyhelmenthes
Digestive tract with the entrance being the exit
cnidarians
Muscular "foot" used to slide, jump, or dig
mollusca
Feeding device like a toothed rasping tongue
mollusca
mantle of tissue covering body
mollusca
No locomotion; stationary animal
sponges
No symmetry or consistent body shape
sponges
Specialized cells, but not organized into organs or tissue
sponges
Spicules act as a skeleton to give it structure
sponges
Water flows through its body, full of canals
sponges
All have notochord; some have backbones
Chordates
humans belong to this phylum
Chordates
Complete digestive tract with two ends
annelids
Fluid-filled compartments used for locomotion
annelids
bilateral phylum that added segmentation
annelids
Champions of variations in appearance
arthropods
Exoskeleton made of chitin and protein
arthropods
First phylum to venture into the air
arthropods
More species than any other phylum
arthropods
Pioneered jointed legs
arthropods
Five-part radial symmetry
echinoderms
Hard but flexible bodies
echinoderms
Tube feet
echinoderms
Most members are parasitic
flatworms
Some of the simplest animals with bilateral symmetry
flatworms
increased complexity made possible by much more DNA
Chordates
most have inside skeleton of bones
Chordates
First muscles and nerves
cnidarians
Some free-drifting medusae
cnidarians
Some have stinging structures
cnidarians
Some non-swimming polyps
cnidarians
