Interdependent Relationships
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  • Question 1
    30 seconds
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    Q.

    A food web diagram is provided. Which of the following organisms depend only on producers for energy?

    answer choices

    diatoms

    shrimp

    amphipods

    squid

  • Question 2
    30 seconds
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    Q.

    The energy organisms need to live and grow first enters the ecosystem when -

    answer choices

    Plants take in light energy from the sun.

    decomposers break down dead organisms.

    primary consumers eat plants for food.

    secondary consumers eat primary consumers.

  • Question 3
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    Q.

    Matter is passed from living part of an ecosystem to the non-living part when which of the following takes place?

    answer choices

    Plants absorb gases

    plants decompose

    animals eat plants

    animals drink water

  • Question 4
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    Q.

    A food web diagram is provided. Bases on the diagram, it is reasonable to conclude that matter could follow which of the following paths as it cycles through this ecosystem?

    answer choices

    Sun -grass- robin

    plant seed - field mouse - robin

    Eagle - deer - plant seeds

    Grass - deer - mountain Lion

  • Question 5
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    Q.

    Which of the following observations would support the claim that as plants absorb sunlight to make food, they release oxygen into the environment?

    answer choices

    Oxygen concentration in the atmosphere was much higher millions of years ago when different plants existed.

    When plants are kept in a sealed environment, the concentration of carbon dioxide steadily goes down.

    Plants that kept under conditions of total darkness fail to grow normally and eventually will die.

    The oxygen concentration in a pond with many plants increases during the day and decreases at night and on cloudy days.

  • Question 6
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    Q.

    The graph below shows populations, over several years, for two animals that share a habitat. Foxes are mammals that hunt for food, and grouse are birds, a common prey animal of foxes. According to the data, in which year did the population of foxes show a decrease that is most likely the result of a decrease in the availability of a source of food?

    answer choices

    2003

    2005

    2008

    2012

  • Question 7
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    Q.

    An increase in the population of an organism would most likely be associated with which of the following?

    answer choices

    A series of sever weather events in the habitat

    A decrease in necessary resources available

    An expansion of suitable living space.

    An increase in animals that prey on the organisms.

  • Question 8
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    Q.

    The milkweed plants serves an important role in the life cycle of the monarch butterfly. Adult butterflies lay their eggs in the milkweed, and then caterpillars eat the same plant during their development. Based on the relationship between the monarchs and milkweed, which of the following trend would be predicted when looking at the data on the population of these two organisms.

    answer choices

    Population decreased in monarch butterflies should follow population decreased in milkweed.

    Population of monarch butterflies should remain constant when milkweed population decreases.

    Population increase in monarch butterflies should follow population decrease in milkweed.

    Population of milkweed should remain constant when monarch butterfly population increases.

  • Question 9
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    Q.

    Eagles and grizzly bears live together in the same habitat. There will be competition between the eagles and the grizzly bears only if which of the following is true?

    answer choices

    Grizzly bears hibernate during the winter while eagles reamin active.

    Pesticides in the fish population affect eagles eggs and decrease their population.

    Both grizzly bears and eagles feed on the same species of salmon.

    Laws prevent humans from being able to hunt Eagles or grizzly bears.

  • Question 10
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    Q.

    An increase in which of the following factors is likely to contribute to competition between two members of the same species living in a certain habitat?

    answer choices

    Available food resources

    Population of the species

    Annual rainfall

    Overall size of the habitat

  • Question 11
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    Q.

    The population of deer in a certain area is monitored over a period of six years. The data is represented in the graph provided. Which of the following is the most likely explanation for the change in population in 2009?

    answer choices

    Wolves, which prey on deer, were being hunted more than usual.

    Rainfall in the previous spring was higher than the yearly average.

    Humans introduced grazing animals that feed on the same plants as the deer.

    More insects that pollinate flowering plants move into the habitat.

  • Question 12
    30 seconds
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    Q.

    A student wants to investigate competition between two organisms. FOr the investigation, it is most important that the student should choose organisms that .....

    answer choices

    reproduce at the same rate.

    are both active during the day.

    have the same adaptations.

    require the same resources.

  • Question 13
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    Q.

    These graphs show how two factors for a certain region changed over time: the number of predators that prey on mice and number of plants of the type that the mice eat. Based on the information from these graphs, in which of the following years would the population of mice have been the highest?

    answer choices

    1996

    1998

    2000

    2002

  • Question 14
    30 seconds
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    Q.

    The table provides information on population density of mayflies, a kind of insect, in a certain area over a few years. Based on the population density data provided, which data provides evidence that there was a significant increase in the population of birds that prey on mayflies.

    answer choices

    2005

    2006

    2007

    2008

  • Question 15
    30 seconds
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    Q.

    An example of a predator and a prey species for four separate ecosystems is provided below. Which of the following would demonstrate and appropriate prediction for the changes to one of the populations of organisms due to a predator/prey interaction?

    answer choices

    when a population of sharks decrease because of fishing, the population of small fish will decrease.

    After a period of heavy rainfall and warmer temperatures, the population of mosquitos will increase.

    During hunting season, when many deer are killed by hunters, the mountain lion population will decline.

    When abundant resources allow the population of mice to increase, the population of snakes will decrease.

  • Question 16
    30 seconds
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    Q.

    Which of the following describes a symbiotic relationship?

    answer choices

    Owl and field mouse

    Oak tree and pine tree

    Spider and fly

    Shark and remora fish

  • Question 17
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    Q.

    information on brown tree snakes is provided along with information on the island of Guam. Brown tree snakes were first brought to Guam in 1059. Which of the following would provide evidence that the change to this environment brought about by the introduction of the brown tree snake has had an effect of the populations of organisms that lived on Guam?

    answer choices

    Any of the military bases on Guam were closed in the 1980's

    Several other species of snakes were known to live on Guam before 1950.

    THe population of lizards on Guam in 1960 was very small.

    The longest brown tree snake ever found on Guam measured three meters in length.

  • Question 18
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    Q.

    A physical disruption to an ecosystem occurs when a highway was built through a forest. Which of the following would provide evidence that the addition of a highway to this forest affected populations?

    answer choices

    THe amount of water runoff from higher elevations increased after the highway was built.

    The trees that were not cut down during the construction of the highway continued to grow.

    There were fewer species of nesting birds living in the forest after the highway was built.

    A greater area of the forest floor was exposed to the sunlight after the highway was built.

  • Question 19
    30 seconds
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    Q.

    The ecosystem with the greatest biodiversity is the one that has the greatest:

    answer choices

    variety of living things.

    average annual rainfall

    coverage of land area

    elevation above sea level.

  • Question 20
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    Q.

    Changes to an ecosystem's biodiversity can have a direct effect on humans because humans -

    answer choices

    inhabit all areas of the Earth's ecosystem.

    use minerals from the ground to make things

    rely mostly on solar power for energy.

    depend on the Earth's natural resources.

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