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Understanding Ecosystem Dynamics: Producers, Consumers, and Population Strategies

This review covers essential concepts in ecology, including the roles of producers and consumers, types of dispersion patterns, and reproductive strategies. Explore the differences between abiotic and biotic factors, and learn about limiting factors like predation and weather. Delve into symbiotic relationships such as mutualism and parasitism, and grasp energy flow in ecosystems through food chains. Understand the impact of nitrogen fixation and the processes of primary and secondary succession, highlighting the fundamental principles of ecological balance and resource management.

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Understanding Ecosystem Dynamics: Producers, Consumers, and Population Strategies

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  1. Ecology Unit Test Review

  2. Are plants producers or consumers?

  3. Producers

  4. Organisms that eat only plants are called?

  5. Herbivores

  6. Is soil type abiotic or biotic?

  7. Abiotic

  8. Organisms that live in the same area live in the same ___________

  9. Habitat

  10. Organisms that share the same job share the same ________

  11. Niche

  12. Which has the highest population density?1 chicken 2 goats 6 cows 12 pigs (all living on the same farm)

  13. 12 pigs

  14. Animals that travel in herds are what type of dispersion pattern?

  15. Clumped

  16. If an organism emigrates from an area this means….

  17. They exit/leave that area

  18. What is the reproductive strategy of a rat?

  19. R-strategy

  20. What characteristics are typical of k-strategy reproduction?

  21. Produces few offspring, pregnant for a long time, lengthy prenatal care

  22. What will happen if a population exceeds carrying capacity?

  23. The death rate will increase

  24. Name a density- dependent limiting factor.

  25. PredationParasitismCompetitionDisease

  26. Name a density- independent limiting factor.

  27. WeatherNatural DisastersHuman Activities

  28. Type of symbiotic relationship where both organisms benefit?

  29. Mutualism

  30. Type of symbiotic relationship where one organism benefits & the other is neither helped nor harmed.

  31. Commensalism

  32. Type of symbiotic relationship where one benefits and the other is hurt.

  33. Parasitism

  34. As we move up the tropic levels how much energy is lost as heat at each level?

  35. 90%

  36. What is the ultimate source of energy for the food pyramid?

  37. Sunlight

  38. What eats the Producer in a food chain?

  39. Primary Consumer

  40. Organisms with overlapping niches probably have which type of relationship?

  41. Competitive

  42. Describe Nitrogen Fixation.

  43. Bacteria take nitrogen from the air and “fix” it so it can be used by plants.

  44. True of False:Nutrients are recylced

  45. True.(Energy is not)

  46. Which of the following is a renewable resource?A. WoodB. Natural GasC. Uranium

  47. A. Wood

  48. After a forest fire what type of succession is most likely to occur?

  49. Secondary Succession

  50. What is the biggest difference between primary and secondary succession?

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