sponges and cnidarians

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Across
  1. 5. cell walls rigid outer boundary of a cell used for support and protection
  2. 7. study of animals
  3. 8. cell that has a nucleus and other organelles
  4. 9. cells outside protection cells
  5. 12. arrangement of body parts to create mirror images
  6. 13. study of life
  7. 14. can move to find food
  8. 15. smallest and specific category
Down
  1. 1. cells that move and transport nutrient and sperm
  2. 2. cells that filter the nutrients using mucus
  3. 3. specialization of many cells
  4. 4. no body part to create a mirror image
  5. 6. sharp rigid structures used for support
  6. 10. obtains energy from outside sources
  7. 11. large opening at the top of the sponge to let material out.