Of the following statements about protected areas that have been
established to preserve
biodiversity, which one is not
correct?
A) About 25% of Earth’s land area is now
protected.
B) National parks are one of many types of protected
areas.
C) Most protected areas are too small to protect
species.
D) Management of a protected area should be coordinated
with management of the land
surrounding the area.
E) It is
especially important to protect biodiversity hot spots.
About 25% of Earth’s land area is now protected.
Which of the following strategies would most rapidly increase the
genetic diversity of a
population in an extinction
vortex?
A) Capture all remaining individuals in the population
for captive breeding followed by
reintroduction to the
wild.
B) Establish a reserve that protects the population’s
habitat.
C) Introduce new individuals transported from other
populations of the same species.
D) Sterilize the least fit
individuals in the population.
E) Control populations of the
endangered population’s predators and competitors.
Introduce new individuals transported from other populations of the same species.
Which of the following is a consequence of biological
magnification?
A) Toxic chemicals in the environment pose greater
risk to toplevel predators than to primary
consumers.
B)
Populations of top-level predators are generally smaller than
populations of primary
consumers.
C) The biomass of
producers in an ecosystem is generally higher than the biomass of
primary
consumers.
D) Only a small portion of the energy
captured by producers is transferred to consumers.
E) The amount
of biomass in the producer level of an ecosystem decreases if the
producer
turnover time increases.
Toxic chemicals in the environment pose greater risk to toplevel
predators than to primary
consumers.
What is the single greatest threat to biodiversity?
A)
overharvesting of commercially important species
B) introduced
species that compete with native species
C) pollution of Earth’s
air, water, and soil
D) disruption of trophic relationships as
more and more prey species become extinct
E) habitat alteration,
fragmentation, and destruction
habitat alteration, fragmentation, and destruction
The main cause of the increase in the amount of CO2 in Earth’s
atmosphere over the past 150
years is
A) increased worldwide
primary production.
B) increased worldwide standing crop.
C)
an increase in the amount of infrared radiation absorbed by the
atmosphere.
D) the burning of larger amounts of wood and fossil
fuels.
E) additional respiration by the rapidly growing human population.
the burning of larger amounts of wood and fossil fuels.
One characteristic that distinguishes a population in an extinction
vortex from most other
populations is that
A) its habitat is
fragmented.
B) it is a rare, top-level predator.
C) its
effective population size is much lower than its total population
size.
D) its genetic diversity is very low.
E) it is not
well adapted to edge conditions.
its genetic diversity is very low.