5 Written Questions
5 Matching Questions
- 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.
- The Hubbard Brook watershed deforestation experiment yielded all of the following results except:
Calcium levels remained high in the soil of deforested areas.
The flow of minerals out of a natural watershed was offset by minerals flowing in.
Deforestation increased water runoff.
Most minerals were recycled within a forest ecosystem.
The nitrate concentration in waters draining the deforested area became dangerously high.
- 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.
- In ecological terms, disturbance is an event such as a storm, fire, or human activity that changes a community, removing organisms and altering resource availability. Which of the following statements about the effects of disturbance is correct?
A healthy community is in an equilibrium state of balance, with few disturbances.
The effects of disturbance on a community are almost always negative.
Disturbances can create patches of different habitats in a community.
- Which lake zone would be absent in a very shallow lake?
- a aphotic zone
- b the members of the population are competing for access to a resource.
- c Calcium levels remained high in the soil of deforested areas.
- d Disturbances can create patches of different habitats in a community.
- e regulating the pH of freshwater biomes and terrestrial groundwater.
5 Multiple Choice Questions
- 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.
- 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.
- large and close to a mainland.
- Because plants cannot fix N2
- an open ocean
5 True/False Questions
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 → The growth rate of the Paramecium population will increase.
Select the correct statement(s) about the genetics of behavior.
Select all that apply.
Behaviors with a genetic component can evolve through natural selection.
Learned behaviors are not subject to genetic influence.
Most behavioral traits are determined by a single gene. → Estimates of the global carrying capacity for the human population depend on resource use per capita.
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. → Because plants cannot fix N2
A recent study of ecological footprints concluded that
it is not possible for technological improvements to increase Earth's carrying capacity for humans.
the ecological footprint of the United States is large because per capita resource use is high.
Earth's carrying capacity would increase if per capita meat consumption increased.
current demand by industrialized countries for resources is much smaller than the ecological footprint of those countries.
Earth's carrying capacity for humans is about 10 billion. → determine the birth rate and death rate of each group in a population.
According to the logistic growth equation
the birth rate (b) approaches zero as N approaches K.
the population grows exponentially when K is small.
population growth is zero when N equals K.
the number of individuals added per unit time is greatest when N is close to zero.
the per capita growth rate (r) increases as N approaches K. → population growth is zero when N equals K.