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5 Written questions

5 Matching questions

  1. When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes

    in a community through different seasons.
    in biomes at different latitudes.
    in an ecosystem as it evolves over time.
    at different depths in the ocean.
    across the United States from east to west.
  2. Gray wolves, once the top predators in Yellowstone National Park, were hunted to extinction there in 1926. In 1995, 15 wolves were brought to Yellowstone from Alberta. The wolf population has now grown to 300.
    The forest community in Yellowstone National Park can be described by a top-down model of community organization. Wolves hunt and eat elk. Elk are herbivores that prefer riparian vegetation (plants growing next to streams and lakes). Ravens, bears, and eagles feed on elk carcasses.
    How would you expect the return of the wolves to Yellowstone to affect the other species there?
    Select all that apply.

    Riparian vegetation would decline.
    Elk populations would decline.
    Bear populations would decline.
  3. Select the correct statement(s) about a terrestrial food chain.
    Select all that apply.

    The total biomass of the top trophic level is greatest because the top consumers are large.
    About 1% of the energy stored in producers is converted to organic matter at the secondary consumer level.
    Energy is transferred from decomposers to plants to herbivores to carnivores.
  4. Identify the correct statement(s) about sensory receptors.
    Select all that apply.

    Mechanoreceptors detect sound.
    Foods taste spicy when they activate the same sensory receptors that high temperatures activate.
    Electromagnetic receptors detect pheromones.
  5. This graph shows the effect of removal of urchins and limpets (alone and together) on seaweed cover. Select the statement that accurately describes the results shown in this graph.

    Sea urchins have a much greater effect than limpets in limiting seaweed cover.
    Removing only limpets increased seaweed cover dramatically.
    The lack of change over time in the control plots (with urchins and limpets present) shows that limpets and urchins have no effect on seaweed cover.
  1. a in biomes at different latitudes.
  2. b Sea urchins have a much greater effect than limpets in limiting seaweed cover.
  3. c Elk populations would decline.
  4. d About 1% of the energy stored in producers is converted to organic matter at the secondary consumer level.
  5. e Mechanoreceptors detect sound.
    Foods taste spicy when they activate the same sensory receptors that high temperatures activate.

5 Multiple choice questions

  1. two species that have exactly the same niche cannot coexist in a community.
  2. If a factor limits population growth, increasing its availability will increase population growth.
  3. The perception of sensory input by humans and star-nosed moles differs.
    The number and type of sensory receptors in humans and star-nosed moles differ.
  4. restoration ecology.
  5. The growth rate of the Paramecium population will increase.

5 True/False questions

  1. Your textbook states, "Like organisms, ecosystems are open systems." Which of the following provide a legitimate example to illustrate this statement?
    Select all that apply.

    A population of reef fishes with a high reproductive rate in a mangrove ecosystem may be a source of recruits for a population in an adjacent coral reef ecosystem with a lower reproductive rate.
    Detritivores in soil consume nonliving organic matter and make the nutrients available to plants.
    Earth's atmosphere is bombarded by about 1022 joules of solar radiation each day.
    A population of reef fishes with a high reproductive rate in a mangrove ecosystem may be a source of recruits for a population in an adjacent coral reef ecosystem with a lower reproductive rate.
    Earth's atmosphere is bombarded by about 1022 joules of solar radiation each day.

          

  2. The middle ear converts

    air pressure waves to fluid pressure waves.
    fluid pressure waves to nerve impulses.
    air pressure waves to nerve impulses.
    fluid pressure waves to air pressure waves.
    pressure waves to hair cell movements.
    most of the energy in a trophic level is lost as it passes to the next higher level.

          

  3. Examine the climograph for some major North American biomes. Which two factors influence the distribution of organisms, as shown in this climograph?

    The presence of tundra and presence of forested land
    Annual mean temperature and annual mean precipitation
    The presence of broadleaf and presence of coniferous forest
    Annual mean temperature and annual mean precipitation

          

  4. The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that

    tropical communities are younger.
    tropical regions have very high rates of immigration and very low rates of extinction.
    diversity increases as evapotranspiration decreases.
    higher temperatures cause more rapid speciation.
    tropical regions generally have more available water and higher levels of solar radiation.
    tropical regions generally have more available water and higher levels of solar radiation.

          

  5. Female spotted sandpipers aggressively court males and, after mating, leave the clutch of young for the male to incubate. This sequence may be repeated several times with different males until no available males remain, forcing the female to incubate her last clutch. Which of the following terms best describes this behavior?

    promiscuity
    certainty of paternity
    monogamy
    polyandry
    polygyny
    polyandry

          

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