Invertebrate animals

12345678910111213141516171819202122232425262728293031
Across
  1. 3. organism's reaction to a stimulus
  2. 5. reproduction creating a new organism by exchanging genetic information
  3. 7. The tendency to concentrate sensory organs and nervous tissue at an animal's anterior end
  4. 10. The internal skeleton of an animal
  5. 12. An animal with more that one cell
  6. 14. An external skeleton of an animal
  7. 16. Body canal between the intestinal canal and the body wall
  8. 18. Living in colonies
  9. 19. balance or similarity in body structures of organisms
  10. 20. a part in an animal that has a vital role
  11. 21. transport movement of materials in an animal
  12. 25. Basic unit of structure and organization of all living organisms
  13. 26. living free and independently
  14. 27. an organism that feeds off a host
  15. 29. Free-swimming sexual form of a coelenterate
  16. 30. feeding When an animal feeds on fluids
  17. 31. material plants and animals are made up of
Down
  1. 1. functions chemical reactions or other events that results in a transformation
  2. 2. circulatory system tissues are surrounded by blood in this circulatory system
  3. 3. the creation of more animals
  4. 4. An animal without a spine
  5. 6. of organization levels that make up all of life
  6. 7. Circulatory System The blood is closed at all times
  7. 8. Reproduction Only need one animal to reproduce
  8. 9. a small growth
  9. 11. The ability to move independently
  10. 13. intake of oxygen and release of carbon dioxide
  11. 15. Process of eliminating or expelling waste matter
  12. 17. system group of organs that work together
  13. 22. the role an animal in an environment
  14. 23. feeding Feeding by filtering through water
  15. 24. column another name for spinal column
  16. 28. organism permanently attached to one place