Bio Test 3

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Author:
lrsimon
ID:
56025
Filename:
Bio Test 3
Updated:
2010-12-14 20:08:44
Tags:
Bio semesters
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Description:
Communities and Ecosystems
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  1. How much energy travels from one trophic level to the other?
    20%
  2. Some people are concerned about genetically modified corn because we don't know the long term effect on ______________
    Consumers
  3. Environmentalists are very concerned about the declining whale _______________ since many hunters only care about profit.
    population.
  4. In a _____________ the organism that eats the preceding organism is usually bigger.
    food chain.
  5. Whenever a _____________ Is destroyed, the organisms living there must find a new place suitable for them to live, preferably within the same ecosystem.
    habitat
  6. The _________ in Tegucigalpa is different than the one in Roatan, one is a rain forest and the other is marine.
    ecosystem.
  7. Since, __________ do not have digestive tracks, they must first secrete digestive enzymes before ingesting nutrients.
    Saprotrophs.
  8. Earthworms are one of the most important __________ because not only do they eat organic remains, but their tunnels aerate (provide air) the soil.
    Detritivores
  9. Although flies and sharks may be in the same complex_______________they are not in a predator-prey relationship.
    Food web
  10. An ___________________such as a rose bush, is not only decorative, but also provides nutrients and oxygen.
    autotrophs
  11. Another waay to name top carnivores, primary carnivores, herbivores?
    1st, 2nd and 3rd level consumers.
  12. Why do detritroves and decomposers have a higher energy level?
    because they eat at all levels. The difference is that they do not retain all the nutrients.
  13. If the Producers make 300,000Cal in productivity hoe much will the top carnivore have?
    • 300,000-producer
    • 30,000-herbivores
    • 3,000-primary carnivores
    • 300-TOP CARNIVORES

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