| A | B |
|---|
| bilateral symmetry | two halves of the body are similar |
| radial symmetry | the body is organized around a center |
| no symmetry | body has no similarities |
| vertebrates | backbone is internal |
| invertebrates | no backbone or has an exoskeleton |
| Sponges | Porifera |
| larvae | offspring do not look like parents |
| filter feeders | a way of getting food by taking in sea water and filtering out food and oxygen and releasing the clean water. |
| Cnidarians | have two main body formats, have a mouth and a digestive cavity |
| habitat | an area that an organism lives in |
| Jelly fish are | Cnidarians |
| Jellyfish have | stinging cells for defense and capturing food |
| Sea Anemones, coral and hydrozoans are | examples of Cnidarians |
| Fringing reefs | a reef found close to land |
| Atolls | reef on top of a sunken volcano |
| Barrier reef | a reef farther away from land |
| Worms | have a definite head and bilateral symmetry |
| 3 phylums of worms | flatworms, roundworms, segmented worms |
| Flukes and tapeworms are | parasites |
| coelom | space in a worm for complex organs |
