9-2 and 9-3 Review

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Across
  1. 3. where cnidarians live
  2. 5. how many directions does water move in a sponge
  3. 7. skeleton on the outside of the animal
  4. 10. help move water through the sponge
  5. 12. carry food to cells of the sponge
  6. 15. rubbery material that makes up spicules
  7. 17. animal without a backbone
  8. 19. sponges are classified in this phylum
  9. 20. the number of layers a sponge has
Down
  1. 1. animal with a backbone
  2. 2. shape of a sponge
  3. 4. skeleton on the inside of the animal
  4. 6. umbrella form of a cnidarian
  5. 8. an invertebrate animal with stinging cells
  6. 9. cuplike form of a cnidarian
  7. 11. invertebrate animal with pores
  8. 13. cnidarians use these to capture prey
  9. 14. hard needle-like structure in sponge
  10. 16. tiny openings
  11. 18. a type of cell that makes up the inner layer of a sponge