32. Wastes tend to accumulate in the environment as a population reaches the carrying capacity.
A) True
B) False
33.Regarding population dispersion patterns, which of the following is an inappropriate pairing?
A) randomly spaced — chance
B) evenly spaced — regular intervals
C) clumped — clusters
D) dispersive — randomly distributed
34.As a population reaches its carrying capacity, there is an increase in competition for
A) food.
B) shelter.
C) mates.
D) All of the above
35.Which of the following does not represent a population?
A) all the robins in Austin, Texas
B) all the grass frogs in the pond of Central Park, New York City
C) all the birds in Chicago, Illinois
D) all the earthworms in Yosemite National Park
36.An organism’s niche includes
A) what it eats.
B) where it eats.
C) when it eats.
D) All of the above
37.Because individuals in a population usually tend to produce more than one offspring,
A) populations tend to increase in size.
B) populations remain stable in size.
C) individuals tend to die quickly.
D) the number of individuals declines rapidly.
38.The movement of organisms into a given area from another area is called
A) immigration.
B) emigration.
C) population shift.
D) carrying capacity.
39.An organism’s niche includes its habitat.
A) True
B) False
40.When two species compete, the niche that each species ultimately occupies is its
A) competitive niche.
B) realized niche.
C) fundamental niche.
D) exclusive niche.
41.As resources in a population become less available, the population
A) declines rapidly.
B) increases slowly.
C) reaches carrying capacity.
D) enters a phase of exponential growth.
42.If a population grows larger than the carrying capacity of the environment, the
A) death rate may rise.
B) birthrate may rise.
C) death rate must fall.
D) birthrate must fall.
43.If the niches of two organisms overlap,
A) the organisms may have to compete directly.
B) the two organisms will always form a symbiotic relationship.
C) both organisms will disappear from the habitat.
D) one organism usually migrates to a new habitat.
44.In a logistic growth curve, exponential growth is the phase in which the population
A) reaches carrying capacity.
B) grows quickly.
C) growth begins to slow down.
D) growth stops.
45.What is happening in a population as it decreases?
A) The birthrate and the death rate remain the same.
B) The death rate becomes lower than the birthrate.
C) The death rate stays the same and the birthrate increases.
D) The death rate becomes higher than the birthrate.
46.An organism’s niche is the sum of all its interactions in its environment, including interactions with other organisms.
A) True
B) False
47.Which would be least likely to be affected by a density-dependent limiting factor?
A) a small, scattered population
B) a population with a high birthrate
C) a large, dense population
D) a population with a high immigration rate
48.The various growth phases through which most populations go are represented on a(an)
A) logistic growth curve.
B) exponential growth curve.
C) normal curve.
D) population curve.
50.Which of the following is a density-independent limiting factor?
A) earthquake
B) disease
C) emigration
D) parasitism