Food Webs And Energy Transfer

13 Questions | Total Attempts: 311

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Food Webs And Energy Transfer

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Questions and Answers
  • 1. 
    1. If a lobster is 3 steps up a food chain from phytoplankton ( a producer), how much phytoplankton (in grams) would be needed to provide a human with a 600 g lobster dinner?
    • A. 

      6000 grams

    • B. 

      60,000 grams

    • C. 

      600,000 grams

    • D. 

      600 grams

  • 2. 
    If the leeches were removed from the food web, which of the outcomes below might occur?
    • A. 

      The trout fishing industry might grow

    • B. 

      The bloodworm population loses a predator and their population size might increase

    • C. 

      There would be less bloodworms so the trout would have less to eat.

    • D. 

      There would be less Algae

    • E. 

      B and D

    • F. 

      C and D

  • 3. 
    A hawk weighs about 15 pounds.  What is the weight of grass that will be needed to support the life of 1 hawk.
    • A. 

      1.5 pounds

    • B. 

      1,500 pounds

    • C. 

      150,000 pounds

    • D. 

      15,000 pounds

  • 4. 
    The Sun is an example of a/an:
    • A. 

      Producer

    • B. 

      Source of energy

    • C. 

      Biotic component of an ecosystem

    • D. 

      Omnivore

    • E. 

      None of the above

  • 5. 
    Which of the following statements best describes the interaction of the two populations shown in the graph above?
    • A. 

      Species A is a predator; Species B is the Prey

    • B. 

      Species A and Species B are endangered species

    • C. 

      Species A is an insect; Species B is a plant.

    • D. 

      Species B is the predator; Species A is the prey.

  • 6. 
    Bracket fungi return the nutrients in a dead log to the soil. They are classified as:
    • A. 

      Producers

    • B. 

      Scavengers

    • C. 

      Predators

    • D. 

      Decomposers

  • 7. 
    The role of plants in maintaining the flow of energy in an ecosystem is to:
    • A. 

      Be a consumer

    • B. 

      Release energy in the form of heat

    • C. 

      Capture energy from an abiotic source and convert it into a biotic form

    • D. 

      Capture energy and convert it into an abiotic form.

  • 8. 
    Which of the following is true regarding the pyramid of numbers?
    • A. 

      Zebras would be considered to be a herbivore.

    • B. 

      Carnivores occupy the greatest numbers in an ecosystem.

    • C. 

      Producers occupy the bottom of the pyramid because they have the greatest biomass out of all the Trophic Levels.

    • D. 

      Herbivores occupy a central position in the pyramid immediately above the producers.

  • 9. 
    Both food webs and food chains can be used to illustrate the passage of energy in an ecosystem. What is the difference between a food web and a food chain?
    • A. 

      A food web contains decomposers while a food chain does not.

    • B. 

      A food chain contains decomposers while a food web does not.

    • C. 

      A food web contains all possible paths of energy while a food chain does not.

    • D. 

      A food chain contains all possible paths of energy while a food web does not.

  • 10. 
    Which of the following statements is true regarding the energy flow model?
    • A. 

      Most of the energy in the food chain is concentrated in the producers.

    • B. 

      The least amount of energy in the food chain is concentrated in the producers.

    • C. 

      Carnivores like lions have the most energy because they weigh the most.

    • D. 

      Herbivores, like cows and zebras, have more combined energy than plants, because they have a lot of meat on their bodies.

  • 11. 
    Based on the information provided in this food web, which animal would be classified as an omnivore?  
    • A. 

      Deer

    • B. 

      Black bear

    • C. 

      Red fox

    • D. 

      Owl

  • 12. 
    Based on the information provided in this food web, which of the following would happen if the owl went extinct.  
    • A. 

      The red fox and the bear population would increase immediately.

    • B. 

      The red fox population would decrease at first.

    • C. 

      The rabbit population would suffer.

    • D. 

      The deer population would face an immediate shortage of berries.

  • 13. 
    Which of the following would be true if a predator-prey graph was made between the black bear and the rabbit?
    • A. 

      The black bear population would be greater than the rabbit population.

    • B. 

      The rabbit population would follow after the black bear population.

    • C. 

      The black bear population would increase immediately after the rabbit population increases.

    • D. 

      The black bear population would follow the rabbit population, but only after a delay of a few years.