Unit 5 Target 3: Energy Flow Through Ecosystems

14 Questions | Total Attempts: 210

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Unit 5 Target 3: Energy Flow Through Ecosystems


Questions and Answers
  • 1. 
    In the food web above, which is a correct sequence for the flow of energy in a food chain containing the leopard seal? 
    • A. 

      Phytoplankton > krill > penguin > leopard seal

    • B. 

      Smaller toothed whales > leopard seal > fish > krill

    • C. 

      Other birds > leopard seal > other seals > baleen whale

    • D. 

      Carnivorous zooplankton > other seals > leopard seal > smaller toothed whales

  • 2. 
    Refer to the illustration above. How much energy is available to the organisms in level 3? 
    • A. 

      All of the energy in level 1 plus the energy in level 2

    • B. 

      All of the energy in level 1 minus the energy in level 2

    • C. 

      About 10 percent of the energy in level 2

    • D. 

      About 90 percent of the energy in level 2

  • 3. 
    Organisms that manufacture organic nutrients for an ecosystem are called 
    • A. 

      Consumers.

    • B. 

      Predators.

    • C. 

      Producers.

    • D. 

      Omnivores.

  • 4. 
    Consider the following simple lake food chain.Algae > Mosquito larvae > Dragonfly larvae > Perch > PikeAccording to this diagram, which of these organisms is a tertiary consumer? 
    • A. 

      Pike

    • B. 

      Perch

    • C. 

      Dragongly larvae

    • D. 

      Mosquito larvae

  • 5. 
    Approximately 10% of the energy absorbed by one trophic level is transferred to the next successive level. The same number of calories are available at the primary producer level of each of these food chains.Food Chain 1:   phytoplankton > zooplankton > smelt > trout > humansFood Chain 2:   phytoplankton > smelt > humansWhat is the trophic level for the zooplankton in Food Chain 1? 
    • A. 

      Tertiary consumer

    • B. 

      Secondary consumer

    • C. 

      Producer

    • D. 

      Primary consumer

  • 6. 
    Approximately 10% of the energy absorbed by one trophic level is transferred to the next successive level. The same number of calories are available at the primary producer level of each of these food chains.Food Chain 1:   phytoplankton à zooplankton à smelt à trout à humansFood Chain 2:   phytoplankton à smelt à humansHow much energy is available to humans in Food Chain 2 as compared to the energy available to humans in Food Chain 1? 
    • A. 

      10 times less energy

    • B. 

      100 times less energy

    • C. 

      10 times more energy

    • D. 

      100 times more energy

  • 7. 
    Which energy pyramid accurately represents the amount of energy in a desert food chain including cactus, hawk, insect, and snake?
    • A. 
    • B. 
    • C. 
    • D. 
  • 8. 
    In going from one trophic level to the next higher level, 
    • A. 

      The number of organisms increases.

    • B. 

      The amount of usable energy increases.

    • C. 

      The amount of usable energy decreases.

    • D. 

      None of the above

  • 9. 
    Which path best illustrates one way energy travels through a forest ecosystem consisting of mouse, owl, plant, snake, and sun? 
    • A. 

      Sun > plant > owl > snake > mouse

    • B. 

      Sun > plant > mouse > snake > owl

    • C. 

      Plant > sun >snake > owl > mouse

    • D. 

      Mouse > owl > snake > plant > sun

  • 10. 
    All the interconnected feeding relationships in an ecosystem make up a food 
    • A. 

      Interaction.

    • B. 

      Chain.

    • C. 

      Pyramid.

    • D. 

      Web.

  • 11. 
    The first trophic level of any ecosystem is occupied by organisms such as 
    • A. 

      Lions, wolves, and snakes.

    • B. 

      Humans, bears, and pigs.

    • C. 

      Cows, horses, and caterpillars.

    • D. 

      Plants, bacteria, and algae.

  • 12. 
    The total amount of living tissue within a given trophic level is called the 
    • A. 

      Organic mass.

    • B. 

      Trophic mass.

    • C. 

      Energy mass.

    • D. 

      Biomass.

  • 13. 
    Only 10 percent of the energy stored in an organism can be passed on to the next trophic level. Of the remaining energy, some is used for the organism’s life processes, and the rest isa.    used in reproduction.    c.    stored as fat.    b.    stored as body tissue.    d.    released as heat.
    • A. 

      Used in reproduction.

    • B. 

      Stored as body tissue.

    • C. 

      Stored as fat.

    • D. 

      Released as heat.

  • 14. 
    Which ecological pyramid is shown above?a.    energy pyramid    c.    biomass pyramid    b.    pyramid of numbers    d.    food pyramid
    • A. 

      Energy pyramid

    • B. 

      Pyramid of numbers

    • C. 

      Biomass pyramid

    • D. 

      Food pyramid

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