Across
- 4. middle layer of cells
- 7. when one side of a group of hollow cells indents
- 9. when a cell has a nucleus and other organelles
- 10. on inside of sponge, have flagella
- 11. second to last specific category
- 12. having no body cavity or organs
- 14. outer layer of cells
Down
- 1. fertilized egg
- 2. the things that sting prey (on tentacles)
- 3. 32 or more cells with a filled in center
- 5. when cluster of cells hollows out
- 6. the term for when an organism produces eggs and sperm
- 8. aid in reproduction and in carrying nutrients
- 9. inner layer of cells
- 13. small openings that allow water into the sponge