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5 Written questions

5 Matching questions

  1. 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.
  2. The principle of competitive exclusion states that

    two species cannot coexist in the same habitat.
    two species that have exactly the same niche cannot coexist in a community.
    competition between two species always causes extinction or emigration of one species.
    competition in a population promotes survival of the best-adapted individuals.
    two species will stop reproducing until one species leaves the habitat.
  3. The observation that members of a population are uniformly distributed suggests that

    the members of the population are competing for access to a resource.
    the size of the area occupied by the population is increasing.
    resources are distributed unevenly.
    the members of the population are neither attracted to nor repelled by one another.
    the density of the population is low.
  4. Plasma membranes of adjacent cardiac muscle cells interlock at specialized regions called intercalated disks. What is the significance of this feature of cardiac muscles?

    The intercalated disks play the same role as striations of skeletal muscle.
    The intercalated disks generate action potentials within the heart muscle without nervous system input.
    The intercalated disks allow coordinated contraction of the whole heart.
  5. Based on the intermediate disturbance hypothesis, a community's species diversity is increased by

    frequent massive disturbance.
    intensive disturbance by humans.
    stable conditions with no disturbance.
    human intervention to eliminate disturbance.
    moderate levels of disturbance.
  1. a the members of the population are competing for access to a resource.
  2. b two species that have exactly the same niche cannot coexist in a community.
  3. c The intercalated disks allow coordinated contraction of the whole heart.
  4. d 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.
  5. e moderate levels of disturbance.

5 Multiple choice questions

  1. A pyramid of biomass may be inverted because it is based on biomass at one point in time. Pyramids of net production are based on productivity per unit time.
  2. This behavior is likely to increase gosling survival.
  3. Unlike pyramids of biomass, pyramids of net production are based on measurements per unit time.
  4. tropical regions generally have more available water and higher levels of solar radiation.
  5. prey on the community's dominant species.

5 True/False questions

  1. Which of the following is not required for a behavioral trait to evolve by natural selection?

    An individual's reproductive success depends in part on how the behavior is performed.
    In each individual, the form of the behavior is determined entirely by genes.
    An individual's genotype influences its behavioral phenotype.
    The behavior varies among individuals.
    Some component of the behavior is genetically inherited.
    They are expressed in most individuals in a population

          

  2. 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.
    Mechanoreceptors detect sound.
    Foods taste spicy when they activate the same sensory receptors that high temperatures activate.

          

  3. What is a likely outcome of a moderate disturbance, such as a severe thunderstorm?
    Select all that apply.

    Reduced species diversity within a community
    Patches of different habitats within the landscape
    Loss of an equilibrium state of balance, leading to a less healthy community
    Patches of different habitats within the landscape

          

  4. Which of the following is true with respect to oligotrophic lakes and eutrophic lakes?

    Sediments in oligotrophic lakes contain larger amounts of decomposable organic matter.
    Eutrophic lake water contains lower concentrations of nutrients.
    Rates of photosynthesis are lower in eutrophic lakes.
    Eutrophic lakes are richer in nutrients.
    Oligotrophic lakes are more subject to oxygen depletion.
    zooplankton-primary producer

          

  5. WHAT IF? If the direction of Earth's rotation reversed, the most predictable effect would be

    winds blowing from west to east along the equator.
    a loss of seasonal variation at high latitudes.
    no more night and day.
    a big change in the length of the year.
    the elimination of ocean currents.
    winds blowing from west to east along the equator.

          

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