Across
- 2. A structure in a sponge responsible for protection
- 3. A type of flatworm that is a parasite
- 6. A type of cnidarian that is bowl shaped and has stinging cells on the bottom
- 7. Describes an organism that feeds on live animals
- 11. A collection of cells working together for the same function
- 12. An organism that has stinging cells and brings food into its central cavity
- 13. An invertebrate with a soft, unsegmented body
- 15. A type of cell in a sponge responsible for digestion
- 17. A type of cnidarian that is vase shaped and has stinging cells on top
- 18. A collection of tissues working together for the same function
- 19. A structure in a sponge that is the entrance for water
- 20. The basic unit of structure and function in living things
Down
- 1. A collection of organs working together for the same function
- 2. A type of worm that has a body made up of linked segments
- 4. Means 'stomachfoot.' A mollusk with one or no shell
- 5. A type of flatworm that is a scavenger
- 8. Describes an organism that feeds on dead animals
- 9. A type of mollusk with two shells. Filter feeder
- 10. An invertebrate with an internal skeleton and a water vascular system
- 12. A type of cell in a sponge responsible for moving water through it
- 14. Invertebrate animals with no tissues. Looks like a hollow bag
- 16. A type of mollusk with tentacles