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5 Written questions

5 Matching questions

  1. The feeding relationships among the species in a community determine the community's

    species richness.
    secondary succession.
    trophic structure.
    species-area curve.
    ecological niche.
  2. In cross-fostering studies, the young of one species are placed in the care of adults from another species. In broad terms, what do researchers learn from such studies?
    Select all that apply.

    Changes in the behavior of cross-fostered young provide information about how the social and physical environment influences behavior.
    Cross-fostering studies provide information about the relative importance of nature and nurture in the development of a trait.
    Cross-fostering studies provide information about the evolutionary relationship between the two species.
  3. Which lake zone would be absent in a very shallow lake?

    aphotic zone
    pelagic zone
    limnetic zone
    littoral zone
    benthic zone
  4. Based on current growth rates, Earth's human population in 2012 will be closest to

    10 billion.
    2 million.
    7 billion.
    3 billion.
    4 billion.
  5. The oceans affect the biosphere in all of the following ways except

    producing a substantial amount of the biosphere's oxygen.
    moderating the climate of terrestrial biomes.
    removing carbon dioxide from the atmosphere.
    regulating the pH of freshwater biomes and terrestrial groundwater.
    being the source of most of Earth's rainfall.
  1. a trophic structure
  2. b aphotic zone
  3. c Changes in the behavior of cross-fostered young provide information about how the social and physical environment influences behavior.
    Cross-fostering studies provide information about the relative importance of nature and nurture in the development of a trait.
  4. d regulating the pH of freshwater biomes and terrestrial groundwater.
  5. e 7 billion.

5 Multiple choice questions

  1. Disturbances can create patches of different habitats in a community.
  2. Life history is r-selected.
  3. multiple biotic and abiotic factors contribute to the cycling of the hare and lynx populations
  4. determine the birth rate and death rate of each group in a population.
  5. iteroparous; K-selected

5 True/False questions

  1. The transduction of sound waves into action potentials takes place

    within the middle ear as the vibrations are amplified by the malleus, incus, and stapes.
    as the basilar membrane vibrates at different frequencies in response to the varying volume of sounds.
    as the basilar membrane becomes more permeable to sodium ions and depolarizes, initiating an action potential in a sensory neuron.
    within the tectorial membrane as it is stimulated by the hair cells.
    when hair cells are bent against the tectorial membrane, causing them to depolarize and release neurotransmitter that stimulates sensory neurons.
    two species that have exactly the same niche cannot coexist in a community.

          

  2. Sensory pathways have four basic functions: sensory reception, transduction, transmission, and perception. How do these functions differ between yourself and a star-nosed mole?
    Select all that apply.
    Select all that apply.
    The perception of sensory input by humans and star-nosed moles differs.
    The mechanism by which the energy of a sensory stimulus is transduced into a receptor potential differs between humans and star-nosed moles.
    The number and type of sensory receptors in humans and star-nosed moles differ.
    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.

          

  3. Consider a population whose growth can be described by the logistic growth model: dN/dt = rmaxN[(K − N)/K]. Which of the following statements about this population is true?

    rmax declines as N increases.
    At low values of N, the logistic growth and exponential growth (dN/dt = rN) models predict similar population growth.
    K is a constant value.
    A population with a positive value of r will grow exponentially.

          

  4. Which of these ecosystems has the lowest net primary production per square meter?

    a tropical rain forest
    a salt marsh
    an open ocean
    a grassland
    a coral reef
    an open ocean

          

  5. 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.
    About 1% of the energy stored in producers is converted to organic matter at the secondary consumer level.