Unit 6 - Ecology Unit Review Sheet

Put your answers on a separate sheet –Review all of your notes and vocabulary words.

  1. Define ecology.
  2. Define abiotic and give an example of an abiotic factor.
  3. Define biotic and give an example of a biotic factor.
  4. List the 6 levels of organization of ecology. Describe each level.
  5. Define habitat.
  6. Define niche.
  7. If organisms have overlapping niches, what is a likely outcome of their interaction?
  8. Describe commensalism and give an example of commensalism.
  9. Describe mutualism and give an example of mutualism.
  10. Describe parasitism and give an example of parasitism.
  11. What two requirements does an ecosystem have?
  12. What type of organism is capable of using and storing energy from the sun?
  13. How must heterotrophs obtain energy?
  14. How do detritivores obtain energy?Give an example of a detritivore.
  15. How do herbivores obtain energy?Give an example of an herbivore.
  16. How do carnivores obtain energy?Give an example of a carnivore.
  17. What are the two types of carnivores?Give an example of each type of carnivore.
  18. How do omnivores obtain energy? Give an example of an omnivore.
  19. What is the difference between a food chain and a food web?
  20. Some ______is lost at each trophic level.
  21. The ultimate/primary source of energy is ______.
  22. A rabbit eats a carrot and a fox eats the rabbit. What level consumer is the rabbit?

What level consumer is the fox?

  1. If the primary producers stored 1000 units of energy, how many are stored in the tertiary consumer level?
  2. If the primary producers stored 1000 units of energy, how many have been lost by the time you get to the tertiary consumer level?
  3. Why are the number of trophic levels limited?
  4. What trophic level has the most organisms?
  5. What trophic level has the least number of organisms?
  6. Why would the few animals at the highest trophic level have a high concentration of a contaminant (such as pesticides) when the food they eat from other trophic levels have lower levels?
  7. Energy ______through an ecosystem and Nutrients ______in an ecosystem.
  8. Where is carbon found?
  9. Carbon is a major component in what four biochemical compounds in our body?
  10. List and describe the four ways organisms play a role in the carbon cycle.
  11. How does combustion play a role in the carbon cycle?
  12. Where is nitrogen found?
  13. Nitrogen is a major component in what biochemical compounds in our body?
  14. List and describe the four ways organisms play a role in the nitrogen cycle.
  15. Where are four places water is found?
  16. The process of ______moves water from lakes, rivers, and oceans to the atmosphere.
  17. The process of ______leads to the formation of clouds.
  18. The process of ______returns water to the bodies that store it.
  19. List and describe the four ways organisms play a role in the water cycle.
  20. What is a biosphere and what are the three parts that make it up.
  21. What is the greenhouse effect? How do people, carbon dioxide and plant life play a role in the greenhouse effect?
  22. What is succession?
  23. When organisms colonies new areas (that have never had life) it is called ______.
  24. The first species to populate an area is called the ______.
  25. The mature community that is developed after community becomes stable is the ______.
  26. When organisms colonize an area that once had life that was wiped out is called______.
  27. One of the main differences in secondary succession is that the community already has ______.
  28. Populations growing with no limitations show a ______shaped curve called ______growth.
  29. What is carrying capacity?
  30. If you had an aquarium, how could you increase the carrying capacity? How could you decrease it?
  31. A population that has grown to its carrying capacity forms a ______shaped curve.
  32. List and define the two types of environmental limitations?
  33. Give an example of a density-dependent factor.
  34. Give an example of a density-independent factor.
  35. How does population size of both predators and prey affect each other? (Use graph)
  36. List several positive and negative effects population growth and technology have on our environment.
  37. How can we lesson the negative effects that human population growth can have on the environment?