Sponges

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Across
  1. 6. Class of sponge which lives in deep water and has no color.
  2. 10. The most plentiful of sponges in the ocean.
  3. 12. The opening at the top of some sponges where water exits.
  4. 13. The rigid skeletal structure of a sponge.
  5. 14. Class of sponge which integrates calcium into its tissues.
  6. 15. How a sponge eats
  7. 16. The specialized cells in a sponge which create the surface of a sponge.
Down
  1. 1. How sponges are classified.
  2. 2. The Specialized cells in a sponge which create the pores or canals.
  3. 3. When a sponge creates egg or sperm and lets the ocean make little sponge babies.
  4. 4. When a sponge regenerated from a peice.
  5. 5. The specialized cells in a sponge which make water move through.
  6. 7. The specialized cells in a sponge which move and become all the other types of cell to allow a sponge to grow or repair damaged tissue.
  7. 8. These special bacteria give the sponge its color and are also thought to regulated nitrogen levels on reefs.
  8. 9. Means mature sponges cannot move.
  9. 11. The flexible skeletal structure of a sponge