BI 170 -- Biological Principles Fall, 1997

EXAM II

Name: ______________________

 

  1. What does Ecology study? [2]
  2. What does a community include? [2]
  3. So, how about an ecosystem then (refer to Question #2)? [2]
  4. What is a biome? [2]
  5. List three abiotic factors which are important in determining the characteristics of a biome. [3]
  6. How does climate affect biome characteristics (either global, local, or seasonal)? [2]
  7. In responding to environmental factors, organisms are either conformers or regulators. What's the difference? [3]
  8. Organisms can adapt to the environment on the short term. Organisms can also adapt over evolutionary time. Give an example of each. [4]
  9. Name 5 of the 9 terrestrial biomes discussed in class and give 2 characteristics of each (abiotic or biotic). [15]
  10. Name 2 aquatic biomes and 2 characteristics of each. [6]
  11. In coevolution of the passion vine and Heliconius butterflies, both species continue to evolve methods to outdo each other. If the plant has no eyes to see the butterfly with, how does it know what to make the eggs look like? [3]
  12. Is an herbivore a predator? [2]
  13. Name 2 ways plants defend against herbivores. [2]
  14. Name 2 defenses animals use against predators. [2]
  15. What is the difference between an endoparasite and an ectoparasite? [2]
  16. What is the difference between interference competition and exploitive competition? [2]
  17. What's a niche? [2]
  18. Can 2 species coexist if their niches are identical? [2]
  19. Is commensalism very common? Why/Why not? [3]
  20. Is mutualism very common? Why/why not? [3]
  21. What's the difference between species richness and species diversity? [2]
  22. Why does succession occur after a major disturbance. The big question really is, why don't the same organisms imeediately return
  23. Does island size or distance form land influence biodiversity? [2]
  24. Give an example of a primary producer [4]
  25. a primary consumer

    a secondary consumer

    a tertiary consumer

  26. At what level do decomposers feed? (Joke: Beethoven spent many years composing many great pieces of music. Know what he's doing now?.... He's decomposing of course....) [2]
  27. At what level do humans feed? [2]
  28. What would be more efficient for me to eat... Tuna or Seaweed? Why? [4]
  29. 65 million years ago, do you think that there were more Tyrannosauruses (Tyrannosauri?) Or more Triceratopses ("veggiesaurus")? Why? [4]
  30. Can the carbon in the cell wall of the grass in my yard end up as hair on a Panda bear in China next week (no, I didn't send my lawn clippings to China!)? How? [4]
  31. Do human agricultural efforts adversely affect ecosystems? [1]
  32. Does human activity around lakes adversely affect ecosystems? [1]
  33. Do human produced pesticides adversely affect ecosystems? [1]
  34. Do human induced CO2 levels in the atmosphere adversely affect ecosystems? [1]
  35. Does human effects on the ozone adversely affect ecosystems? [1]
  36. Does human introduction of exotic species adversely affect ecosystems? [1]
  37. Do human activity destroy habitats thus adversely affect ecosystems? [1]
  38. Do human activity affect biodiversity and thus adversely affect ecosystems? [1
  39. Do humans do a good job of simply screwing up the environment? [1]