Porifera and Cnidaria

123456789101112131415161718192021222324252627282930
Across
  1. 3. how many species of Cnidarians are there
  2. 4. skeleton made of silica
  3. 6. origin of the word Porifera meaning
  4. 8. the condition of having both male and female reproductive organs
  5. 9. what symmetry do sponges body display
  6. 11. the movement of water into cells through the pores
  7. 12. what is the most primitive animal
  8. 17. creates the water currents
  9. 19. inner layer
  10. 21. how do sponges eat without a mouth
  11. 23. the origin of the word Cnidaria
  12. 24. what kind of symmetry do cnidarians have
  13. 25. responsible for the digestion of food and transport of nutrients
  14. 27. where do sponges keep their eggs
  15. 28. sensory cells that help determine the direction of gravity
  16. 30. outer layer
Down
  1. 1. how long have sponges been around for
  2. 2. asexual reproduction is also known as...
  3. 5. cnidocysts contain these in their capsules
  4. 7. part of the sponge breaks off, settles on the sea floor and forms a new sponge
  5. 10. cells the food is ingested by the ... in sponges
  6. 13. sessile(doesn't move alot)
  7. 14. polyps and medusa contain this
  8. 15. contains stinging cells called...
  9. 16. contains ... layers of cells
  10. 18. bell shaped form of tentacles
  11. 20. cell filters food particles
  12. 22. what cnidarian goes through polyp and medusa stage
  13. 26. the sponge does not move therefore it is...
  14. 29. carries nutrients to other cells