| A | B |
|---|
| Porifera | sponges are in this group |
| simplest | sponges are the ______ of animals |
| filter | how a sponge feeds |
| budding | how a sponge reproduces |
| ostia | small openings on side of sponge |
| osculum | large opening water leaves the sponge |
| flagella | create current in a sponge |
| collar | flagella are attached to these cells |
| marine | most sponges live in ____ water |
| fresh | very few sponges live in ___ water |
