| Term | Definition |
|---|
| Sponges | No symmetry or consistent body shape |
| Sponges | Spicules act as a skeleton to give it structure |
| Sponges | Specialized cells, but not organized into organs or tissues |
| Cnidarians | Hollow body cavity for food |
| Cnidarians | Some free drifting medusae |
| Cnidarians | All members live in the ocean |
| Cnidarians | Some have stinging structures (nematocysts) |
| Cnidarians | Some none swimming polyps |
| Molluscs | Mantle of tissue covering the body |
| Molluscs | Some propel, using their siphon as a water jet |
| Molluscs | Feeding device like a toothed, rasping tongue (radula) |
| Molluscs | Muscular "foot" used to slide, dig, or jump |
| Molluscs | Most have a calcium-carbonate shell |
| Flatworms | Tubular mouth (pharynx) at mid-body |
| Flatworms | First muscles and nerves |
| Flatworms | Most members are parasitic |
| Flatworms | Some of the simplest animals with bilateral symmetry |
| Flatworms | Three tissue layers, but no body cavity |
| Flatworms | Digestive Track with the entrance being the exit |
| Echinoderms | Hard but flexible bodies with interlocking plates under the skin |
| Echinoderms | Water flows through its body, full of canals |
| Echinoderms | Tube feet used for locomotion |
| Echinoderms | Five-part radial symmetry |
| Echinoderms | Some spines are little pincers (pedicellaria) |
| Annelids | Their active burrowing has affected global climate |
| Annelids | Fluid-filled compartments used for locomotion |
| Annelids | Complete digestive track with two ends |
| Annelids | Bilateral phylum that added segmentation |
| Annelids | Body design basically a tube within a tube |
| Sponges | No locomotion; stationary animal |
| Arthropods | First phylum to venture into the air |
| Arthropods | Exoskeleton (outside skeleton) made of chitin and protein |
| Arthropods | More species than any other phylum |
| Arthropods | Champions of variations in appendages |
| Arthropods | Pioneered jointed legs |
| Chordates | All have notochord; most have backbone |
| Chordates | Jaws and skulls important in their evolution |
| Chordates | Increased complexity made possible by much more DNA |
| Chordates | Most have inside skeleton of bones |
| Chordates | Phylum to which humans belong |
Combine with other sets
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