Unit 9 Crossword Name:___________________________

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Across
  1. 3. consumers organisms that eat secondary consumers but may also eat primary consumers and producers
  2. 4. organism that eats both plants and animals Example humans, killifish
  3. 5. an organism that eats animals Example lion, shark
  4. 6. consumers organisms that eat primary consumers but may also eat producers
  5. 7. small, usually microscopic animal plankton that float or drift in the ocean
  6. 9. animals that eat the remains of already dead animals and plants
  7. 11. small, usually microscopic plant plankton that float or drift in the ocean
  8. 12. a permanent, close relationship between two organisms that benefits at least one of them
  9. 14. chain the transfer of energy from the sun to producers to consumers; describes groups of organisms, each of which is dependent on another for food
  10. 16. complex organic compound made up of amino acids
  11. 17. shrimp-like zooplankton
  12. 19. organisms that eat dead plants and animals, as well as animal wastes
  13. 22. naturally occurring, inorganic elements and compounds found in water and soil that do not contain the element carbon
  14. 24. organisms that eat other organisms
  15. 25. a symbiotic relationship in which both organisms benefit
Down
  1. 1. any organic or inorganic material that an organism needs to metabolize, grow, and reproduce
  2. 2. consumers organisms that eat plants (producers)
  3. 5. compounds containing the elements carbon, hydrogen, and oxygen
  4. 8. a symbiotic relationship in which one organism benefits and the other is unaffected
  5. 10. the process plants use to make the sugar glucose from water, carbon dioxide, and the energy in sunlight
  6. 13. total amount of organisms per unit volume
  7. 15. a chemical reaction where water is used to break down compounds; typically occurs when food is digested
  8. 16. a symbiotic relationship in which one organism (the parasite) benefits and the other (the host) is harmed
  9. 18. organism that eats only plants Example sheep, manatee
  10. 20. a chemical process in which animals break down and utilize nutrients
  11. 21. high energy nutrients such as fats and oils
  12. 23. organisms that make their own food through photosynthesis