Simple Animals: Porifera & Cnidarians

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Across
  1. 3. small pores or openings on the exterior of an animal
  2. 7. organism unable to move freely on its own
  3. 9. consist of both reproductive organs
  4. 13. the large, central cavity found in the body of a sponge
  5. 17. separate sexes in different organisms
  6. 18. drifter organism
  7. 19. long, whip-like
  8. 21. asexual reproduction by outgrowth
Down
  1. 1. bell shaped swimming form
  2. 2. small, needle-like structures that form the rigid skeletal framework and provide support for sponges and corals
  3. 4. free swimming larva
  4. 5. the bottom of a body of water
  5. 6. Feed on Plankton
  6. 7. simplest sponge body form;tube-shaped with central cavity
  7. 8. sponge type with canals
  8. 10. having both male and female organs
  9. 11. the capacity of an organism
  10. 12. a modified type of collagen protein that forms a fibrous, flexible, and elastic skeletal framework
  11. 14. a young wingless often wormlike form
  12. 15. fixedtube-shaped form
  13. 16. a large aperture in a sponge
  14. 20. sponge with the simplest body form, characterized by a vase-like shape with thin walls