Porifera and Cnidarian

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Across
  1. 1. large opening in sponge
  2. 5. sexes in separate organisms
  3. 6. simplest sponge body form
  4. 7. fixed in one place
  5. 9. both sexes in one organism
  6. 12. whip-like tails for movement
  7. 13. hard support structure in sponges
  8. 14. drifting microscopic organisms
  9. 15. bottom dwelling organism
  10. 17. sponge body form with folds
  11. 18. tiny pores for water entry
  12. 21. able to shorten or tighten
Down
  1. 2. most complex sponge body form
  2. 3. bell-shaped body form, mouth down
  3. 4. Feeder eats by straining particles from water
  4. 8. flexible protein fibers in sponges
  5. 10. new organism grows from parent
  6. 11. having both male and female organs
  7. 14. free-swimming cnidarian larva
  8. 16. central cavity in sponge
  9. 19. immature form before adult
  10. 20. tubular body form, mouth up