AP Biology - Ecology

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Across
  1. 3. Loss of responsiveness to stimuli that convey little or no new information.
  2. 5. Group of populations living in the same area.
  3. 6. Density ___ factor. Agents whose limiting effect becomes more intense as the population density increases.
  4. 8. Living.
  5. 10. Describes the abundance of individuals of each age. Often shown in age structure diagrams.
  6. 13. Maximum number of individuals of a population that can be sustained by a particular habitat. (symbol is K)
  7. 14. When both organisms benefit.
  8. 17. Inborn.
  9. 18. An oriented movement toward (positive) or away from (negative) some stimulus.
  10. 20. Pattern of population growth that occurs when limiting factors restrict the size of the population to the carrying capacity of the habitat. (forms an S shaped curve when graphed)
  11. 21. Species that don't belong in a particular ecosystem and cause problems.
  12. 23. Energy flows, matter is ____.
  13. 25. Describes how individuals in a population are distributed. (clumped, uniform, random)
  14. 26. _____ species. A species that makes an unusually strong impact on the community structure.
  15. 28. Amount of energy that is passed from one trophic level to the next.
  16. 30. ____ response. Another name for plant defenses.
  17. 31. State of animal dormancy during period of drought and heat.
  18. 32. When one organism benefits and one is neutral.
  19. 33. _____ rituals. Methods used by males to attract mates. Aids in species recognition. Helps female to determine if mate is "fit".
  20. 36. The organism the parasite lives on.
  21. 40. Active during the day.
  22. 41. The formation at a specific stage in life of a long lasting behavioral response to a particular individual or object.
  23. 43. Symbol is r.
  24. 44. Non-living.
Down
  1. 1. Elements that prevent a population from attaining its biotic potential. Ex: sunlight, pH, temperature, nesting sites
  2. 2. Group of individuals, all of the same species living in the same area.
  3. 4. Density ____ factor. Occurs independently of the density of the population.
  4. 7. Study of the growth, abundance and distribution of populations.
  5. 9. This is composed of all the regions on the earth that contains living things.
  6. 11. When one organism benefits and one is harmed.
  7. 12. Relationship between 2 organisms.
  8. 15. A random movement or change in activity in response to a stimulus.
  9. 16. This describes the interrelationships between the organisms in a community and the environment.
  10. 19. ___ of a population. Equals the total number of individuals in the population. (represented by N)
  11. 22. ___ of a population. Equals the total number of individuals per area of volume occupied. (Ex: 100mice/km2)
  12. 24. Many interconnected food chains.
  13. 25. Dead organic matter.
  14. 27. Pattern of population growth that occurs whenever the reproductive rate is greater than zero. (forms a J shaped curve)
  15. 29. The study of the distribution and abundance of organisms and their interactions with the world and others.
  16. 34. Place where organisms live. Their "home".
  17. 35. ____ warning. For example, when meerkats have a lookout that warns of approaching danger.
  18. 37. State of inactivity and metabolic depression in animals.
  19. 38. Seasonal movement over long distance.
  20. 39. Time when imprinting occurs.
  21. 42. The role or function an organism has in it's ecosystem.