Invertebrate Vocab

1234567891011121314151617181920
Across
  1. 3. protective structure typically composed of calcium carbonate
  2. 4. division of an organisms body
  3. 6. the preservation and sustainable management of natural resources
  4. 7. phylum of marine invertebrates
  5. 10. Taxonomic rank in biological classification
  6. 12. Animals lacking a backbone
  7. 14. benefits provided by ecosystems to humans
  8. 15. Specialized stinging cells found in cnidarians
  9. 17. organisms that primarily feed on plants
  10. 18. organisms that primarily feed on other animals
  11. 19. biological community of interacting organisms
  12. 20. Variety of life within a specific ecosystem
Down
  1. 1. Symmetry around a central point
  2. 2. respiratory organs
  3. 5. unique hydraulic system in echinoderms for movement
  4. 8. reproduction without involvement of gametes
  5. 9. alteration or elimination of natural habitats
  6. 11. external hard covering
  7. 13. organism that are attached to a substrate
  8. 16. organisms that obtain food by filtering particles from water