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