Biology Unit 12

1234567891011121314151617181920212223242526272829303132
Across
  1. 2. area where an organism lives including the biotic and abiotic factors that affect it
  2. 5. symbiotic relationship in which both species benefit from the relationship
  3. 6. animal that consumes the carcasses of other animals
  4. 7. organism that obtains energy by eating animals
  5. 9. part of Earth in which life exists including land, water, and air or atmosphere
  6. 11. symbiotic relationship in which one organism benefits and the other is neither helped nor harmed
  7. 17. scientificstudy of interactions among organisms and between organisms and their environment
  8. 18. physical, or nonliving, factor that shapes an ecosystem
  9. 20. in which chemical energy is used to produce carbohydrates
  10. 23. organism that breaks down and obtains energy from dead organic matter
  11. 29. pyramid illustration of the relative amounts of energy or matter contained within each trophic level in a given food chain or food web
  12. 30. full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions
  13. 31. interaction in which one organism (the predator) captures and feeds on another organism (the prey)
  14. 32. classification comprising related organisms that share common characteristics and are capable of interbreeding
Down
  1. 1. web network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem
  2. 3. organism that obtains food by consuming other living things; also called a consumer
  3. 4. Exclusion Principle principle that states that no two species can occupy the same niche in the same habitat at the same time
  4. 8. a group of organisms of one species that interbreed and live in the same place at the same time.
  5. 10. organism that feeds on plant and animal remains and other dead matter
  6. 12. relationship in which two species live close together
  7. 13. organism that obtains energy by eating both plants and animals
  8. 14. organism that obtains energy by eating only plants
  9. 15. a group of ecosystems that share similar climates and typical organisms
  10. 16. all the organisms that live in a place, together with their nonliving environment
  11. 19. process used by plants and other autotrophs to capture light energy and use it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches
  12. 21. each step in a food chain or food web
  13. 22. assemblage of different populations that live together in a defined area
  14. 24. a symbiotic relationship in which one organism lives on or inside another organism and harms it
  15. 25. any living part of the environment with which an organism might interact
  16. 26. organism that is able to capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer
  17. 27. ability of an organism to survive and reproduce under circumstances that differ from their optimal conditions
  18. 28. a series of steps in an ecosystem in which organisms transfer energy by eating and being eaten