Food Chains Ecology Quiz

18 Questions | Total Attempts: 139

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Food Chains Ecology Quiz

This quiz will test your knowledge of food chain terms and concepts and carrying capacity terms and concepts. Please provide your name and school initials.


Questions and Answers
  • 1. 
    The name of the first trophic level in a food chain is.
    • A. 

      Primary Consumer

    • B. 

      Producer

    • C. 

      Detritivore

  • 2. 
    What percent of the energy available in each trophic level is lost in each step of the food chain?
    • A. 

      90%

    • B. 

      50%

    • C. 

      10%

  • 3. 
    In a particular food chain there are 550 of species A, and 170 of species B. Species A is most likely what tropic level?
    • A. 

      Carnivore

    • B. 

      Herbivore

    • C. 

      Primary Consumer

    • D. 

      Both B and C.

  • 4. 
    Which trophic level pyramid did you use to solve question number 3?
    • A. 

      Pyramid of Energy

    • B. 

      Pyramid of Biomass

    • C. 

      Pyramid of Numbers

  • 5. 
    In the food chain below, how many calories are stored in the tuna for the human to eat if you start with 10000 calories of phytoplankton? Phytoplankton--> Zooplankton --> Small fish --> medium fish --> tuna -->human
    • A. 

      100J

    • B. 

      1J

    • C. 

      10J

    • D. 

      0.1J

  • 6. 
    In Mongolia there is a village of 300 farmers living on 100 acres of rice paddies and vegetable plots, while in the uplands a clan of 100 herdsmen need 500 acres to live off their herds of yaks and goats. Why do the herdsmen need so much more land for so few people?
    • A. 

      Because the herdsmen are secondary consumers while the farmers are primary consumers.

    • B. 

      Because 90% of the energy is lost each step up the food chain.

    • C. 

      Because the pyramid of numbers predicts fewer individuals each step up the food chain.

    • D. 

      All of the above.

  • 7. 
    The Producer trophic level is different from all the other levels in that....
    • A. 

      They produce their own food from sunlight rather than depending on other levels below them for energy.

    • B. 

      They recycle everything in the food chain.

    • C. 

      They store 50% of they energy they consume.

  • 8. 
    Even though the herdsmen in Question 6 need more land than the lowland farmers, they are still better off raising animals than crops. Why?
    • A. 

      Because they don't have to work as hard.

    • B. 

      Because crops can't be grown in the highlands.

    • C. 

      Because they aren't as crowded.

  • 9. 
    It takes 10 acres of ocean to raise a tuna while 10000 pounds of rice can be grown on 10 acres of land. Why does it still make sense, in terms of energy, to eat tuna?
    • A. 

      Because you can't raise rice on the ocean.

    • B. 

      Because tuna tastes better than rice.

    • C. 

      Because 1 tuna contains more energy than 10000lbs of rice.

  • 10. 
    The carrying capacity of an ecosystem means...
    • A. 

      The total amount of water stored in the ecosystem.

    • B. 

      The number of a particular species the ecosystem can support.

    • C. 

      The number of animals an ecosystem can keep alive for one day.

  • 11. 
    If the carrying capacity of minnow for a particular pond is 2000, what will happen if 2200 minnow are introduced?
    • A. 

      They will all die.

    • B. 

      Only the extra 200 will die.

    • C. 

      They will all survive for a bit and then more than 200 will die.

  • 12. 
    Why is the lynx population going up around 1865?
    • A. 

      Because the hare population is crashing.

    • B. 

      Because there have been lots of large litters for the lynx.

    • C. 

      Because the hare population is very high.

  • 13. 
    Why is the lynx population dropping around 1925?
    • A. 

      Because the hare population has been dropping for a while.

    • B. 

      Because there are lots of lame and blind lynx.

    • C. 

      Because the hare population is very high.

  • 14. 
    In a boreal forest ecosystem, the wolf population has suffered from a severe outbreak of mange for 2 years. What impact will this have on the carrying capacity of the ecosystem for caribou?
    • A. 

      It will stay the same.

    • B. 

      It will go down.

    • C. 

      It will go up.

  • 15. 
    In the Antarctic food chain above, what will likely happen to the population of Crabeater seals if hunters capture 5% of the Blue whale population?
    • A. 

      It will stay the same.

    • B. 

      It will increase.

    • C. 

      It will decrease.

  • 16. 
    For the Antarctic food chain in the previous question, what will likely happen to the population of Krill if the population of Crabeater Seals continues to rise quickly?
    • A. 

      It will crash down.

    • B. 

      It will increase.

    • C. 

      It will stay the same.