Sponges, Cnidarians, and Ctenophores

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Across
  1. 2. They attach themselves firmly to a surface and do not move
  2. 6. A ciliated larva
  3. 7. Internal buds
  4. 8. The opening at the top of the sponge that water leaves through
  5. 10. Jellylike material between the two cell layers
  6. 14. A cnidocyte organelle that has a long filament coiled up inside of it
  7. 15. They trap plankton and other tiny organisms in their small, hairlike projections
  8. 17. A build up of dead polyps that make rocklike formations
  9. 18. A sensory structure at the end of a ctenophores body
  10. 19. Crawling cells that deliver nutrients throughout the body
  11. 20. Hollow gut, with one opening
  12. 23. Tiny, hard particles of calcium carbonate or silicon dioxide that are often shaped like spikes
  13. 24. The inner cell lay
  14. 26. flexible extensions
  15. 27. specialized cells used for defense and capturing prey
Down
  1. 1. Numerous pores that the water enters the sponge through
  2. 3. Aquatic animals that make up the phylum porifera
  3. 4. Flagellated cells also called collar cells
  4. 5. The outer cell layer
  5. 9. Bell-shaped and specialized for swimming
  6. 11. Produce both eggs and sperm
  7. 12. Cells that secrete a sticky substance that binds to their prey
  8. 13. production of light by means of a chemical reaction
  9. 16. The nervous response in cnidarians are controlled by this diffuse web of interconnected nerve cells
  10. 21. The regrowth of missing cells, tissues, or organs
  11. 22. Vase-shaped and specialized for a sessile existence
  12. 25. A simple skeleton made of tough, flexible protein fibers