Across
- 3. cant move
- 6. sperm and egg mixed together
- 7. blastula pushed in with slight indentation
- 12. complete body cavity
- 13. 32 or more cells with no cavity in the center
- 14. give sponges suport
- 15. can move
Down
- 1. divide into 2 4 8 16 cells
- 2. when cells are made different
- 4. inner lining of organs
- 5. only freshwater cnidarian
- 8. not symetrical
- 9. no body cavity
- 10. what is on the outside of sponges
- 11. cells make single layer around central cavity