| Term | Definition |
|---|
| Porifera | Sponges; sessile; diploblastic; pores; radial symmetry |
| Cnidaria | Diploblastic; digestive cavity w/ tentacles; jellyfish, hydras, sea anemones |
| Platyhelminthes | Flatworms, flukes; first triploblasts and bilateria; acoelomates; can be parasitic; regeneration |
| Nematoda | Roundworms; soil; pseudocoelomates; complete digestive tract; may be parasitic |
| Rotifera | Rotifers; tiny filter feeders; pseudocoelomates; complete digestive tract |
| Mollusca | Octopuses, squids, snails, clams; soft bodies; hard shells; first protostomes; first coelomates |
| Annelida | Segmented worms, earthworms; anus and mouth; closed circulatory system; nervous system; setae-bristle appendages |
| Arthropoda | Insects, arachnids, crustaceans; segmented bodies; paired, jointed legs; chitinous exoskeleton; open circulatory system; dorsal heart |
| Echinodermata | Sea urchin, sea stars, brittle stars, sand dollars; spiny exoskeleton; first deuterostomes |
| Pisces | Cold blooded; gills; scales; 2-chambered heart |
| Amphibian | Gills --> lungs; gas exchange through skin; 3-chambered heart |
| Reptilia | Cold-blooded; chitinous eggs; 4-chambered heart; first vertebrates to have internal fertilization |
| Aves | Warm blooded; amniotic egg; wings; feathers; hollow bones; 4-chambered heart |
| Monotreme | Egg-laying mammals; Milk glands |
| Marsupial | Pouches; babies born before finishing development; live in Australia and South America |
| Eutherian mammal | Complete development in the uterus; placenta |
Combine with other sets
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