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Biology - Chapter 55
15問 • 1年前
  • ユーザ名非公開
  • 通報

    問題一覧

  • 1

    To recycle nutrients, an ecosystem must have, at a minimum, _______.

    producers and decomposers

  • 2

    If the sun were to suddenly stop providing energy to Earth, most ecosystems would vanish. Which of the following ecosystems would likely survive the longest after this hypothetical disaster?

    benthic ocean

  • 3

    Why is net primary production (NPP) a more useful measurement to an ecosystem ecologist than gross primary production (GPP)?

    NPP represents the stored chemical energy that is available to consumers in the ecosystem.

  • 4

    If the flow of energy in an arctic ecosystem goes through a simple food chain, perhaps involving humans, starting from phytoplankton to zooplankton to fish to seals to polar bears, then which of the following could be true?

    Fish can potentially provide more food for humans than seal meat.

  • 5

    Which of the following organisms is INCORRECTLY paired with its trophic level?

    zooplankton - primary producer

  • 6

    How is it that satellites can detect differences in primary productivity on Earth?

    Satellites compare the wavelengths of light captured and reflected by photoautotrophs in different ecosystems.

  • 7

    If you applied a fungicide to a cornfield, what would you expect to happen to the rate of decomposition and net ecosystem production (NEP)?

    Decomposition rate would decrease and NEP would increase.

  • 8

    Owls eat rats, mice, shrews, and small birds. Assume that, over a period of time, an owl consumes 5000 J of animal material. The owl loses 2300 J in feces and owl pellets and uses 2500 J for cellular respiration. What is the production efficiency of this owl?

    4%

  • 9

    Which one of the following correctly ranks these organisms in order from lowest to highest percent in production efficiency?

    mammals, fish, insects

  • 10

    How does inefficient transfer of energy among trophic levels result in the typically high endangerment status of many top-level predators?

    Top-level predators are destined to have small populations that are sparsely distributed

  • 11

    Why is terrestrial productivity higher in equatorial climates?

    The answer is most likely a combination of the other responses.

  • 12

    Which of the following has the greatest effect on the rate of chemical cycling in an ecosystem?

    the rate of decomposition in the ecosystem

  • 13

    Which trophic level is most vulnerable to extinction?

    tertiary consumer level

  • 14

    Consider the global nitrogen cycle. What is the limiting portion of the cycle for plants?

    nitrogen fixation by bacteria

  • 15

    Which of the following statements is correct about biogeochemical cycling?

    The phosphorus cycle involves the weathering of rocks.

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    問題一覧

  • 1

    To recycle nutrients, an ecosystem must have, at a minimum, _______.

    producers and decomposers

  • 2

    If the sun were to suddenly stop providing energy to Earth, most ecosystems would vanish. Which of the following ecosystems would likely survive the longest after this hypothetical disaster?

    benthic ocean

  • 3

    Why is net primary production (NPP) a more useful measurement to an ecosystem ecologist than gross primary production (GPP)?

    NPP represents the stored chemical energy that is available to consumers in the ecosystem.

  • 4

    If the flow of energy in an arctic ecosystem goes through a simple food chain, perhaps involving humans, starting from phytoplankton to zooplankton to fish to seals to polar bears, then which of the following could be true?

    Fish can potentially provide more food for humans than seal meat.

  • 5

    Which of the following organisms is INCORRECTLY paired with its trophic level?

    zooplankton - primary producer

  • 6

    How is it that satellites can detect differences in primary productivity on Earth?

    Satellites compare the wavelengths of light captured and reflected by photoautotrophs in different ecosystems.

  • 7

    If you applied a fungicide to a cornfield, what would you expect to happen to the rate of decomposition and net ecosystem production (NEP)?

    Decomposition rate would decrease and NEP would increase.

  • 8

    Owls eat rats, mice, shrews, and small birds. Assume that, over a period of time, an owl consumes 5000 J of animal material. The owl loses 2300 J in feces and owl pellets and uses 2500 J for cellular respiration. What is the production efficiency of this owl?

    4%

  • 9

    Which one of the following correctly ranks these organisms in order from lowest to highest percent in production efficiency?

    mammals, fish, insects

  • 10

    How does inefficient transfer of energy among trophic levels result in the typically high endangerment status of many top-level predators?

    Top-level predators are destined to have small populations that are sparsely distributed

  • 11

    Why is terrestrial productivity higher in equatorial climates?

    The answer is most likely a combination of the other responses.

  • 12

    Which of the following has the greatest effect on the rate of chemical cycling in an ecosystem?

    the rate of decomposition in the ecosystem

  • 13

    Which trophic level is most vulnerable to extinction?

    tertiary consumer level

  • 14

    Consider the global nitrogen cycle. What is the limiting portion of the cycle for plants?

    nitrogen fixation by bacteria

  • 15

    Which of the following statements is correct about biogeochemical cycling?

    The phosphorus cycle involves the weathering of rocks.