Cnidarians

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Across
  1. 2. Colonial anthozoans that have a tough, branching skeleton
  2. 4. Cnidarian class that lack a medusa stage
  3. 5. The layer of cells that line the gut
  4. 8. Where food is digested
  5. 9. Digestion within the cells
  6. 10. Phylum that includes sea anemones, jellyfish, corals and their relatives
  7. 11. Hydrozoans that form drifting colonies
  8. 14. Most dangerous class of Cnidarians
  9. 16. Unique stinging structures
  10. 18. Thin partitions that help in digestion
  11. 19. Gelatinous middle layer
  12. 20. Finger-like extensions used to capture food
Down
  1. 1. All Cnidarians eat other animals, meaning they are....
  2. 3. Surface that contains the mouth
  3. 6. Digestion that takes place outside of the cells
  4. 7. Bell-like Cnidarian
  5. 12. Larva stage of Cnidaria
  6. 13. Form of Cnidaria that attaches itself to ocean floor and doesn't move
  7. 15. surface Surface opposite of the mouth
  8. 17. External layer of cells