| A | B |
|---|
| Vertebrates | animals with backbones |
| Invertebrates | animals without backbones |
| Radial Symmetry | body parts arranged around a central point |
| Bilateral Symmetry | body parts arranged such that it could be split exactly in half |
| Phylum Porifera | Sponges |
| Filter Feeder | obtains food from water pulled in through pores |
| Regeneration | ability of an organism to regrow body parts |
| Sponges | live in water, filter feeders, reproduce sexually and asexually |
| Cnidarians | have stinging cells, tentacles, radially symmetrical |
| Flatworms | planarians and tapeworms, most are parasites |
| Roundworms | heartworms and hookworms, 2 body openings mouth & anus, many are parasites |
| Mollusks | soft bodied invertebrates that are classified by their shells and type of foot |
| Segmented worms | have circulatory, respiratory, excretory, digestive, muscular and reproductive systems that work throughout more than 100 segments |
| Earthworms | segmented worm that eats soil |
| Leeches | segmented worm that attaches itself to animals and sucks blood |
