UNH Biology 412 Final UPDATED Exam
Questions and CORRECT Answers
The maximum number of individuals of a given population the environment can support is
the environment's _____ for that population.
A.carrying capacity
B.effect on the intrinsic growth rate
C.population size
D.effect on the exponential growth rate - CORRECT ANSWER✔✔- Carrying Capacity
A severe drought is an example of a density-_____ factor that can influence population size.
The availability of nest sites is an example of a density-_____ factor.
A.dependent; independent
B.independent; dependent
C.dependent; dependent
D.independent; independent - CORRECT ANSWER✔✔- independent; dependent
When a population is small relative to its carrying capacity, its growth will be:
A.geometric.
B.exponential.
C.logistic.
D.both geometric and exponential.E.both geometric and logistic. - CORRECT
ANSWER✔✔- exponential
A scientist is studying a population of kangaroo rats in the southwestern deserts of the United
States. For approximately 4 years the population remains at or near 125 individuals. In the
fifth year, it falls to 30. This sharp decrease in population size is most likely the result of
density-_____ factors.
A.dependent
B.independent - CORRECT ANSWER✔✔- independent
,The term (ΔN/N0)/Δt (where N denotes the size of a population and t represents time) is used
to calculate:
A.a habitat's carrying capacity.
B.the "available" percentage of a habitat's carrying capacity.
C.a population's density.
D.a population's specific growth rate. - CORRECT ANSWER✔✔- a population's specific
growth rate
The common mud turtle experiences relatively uniform mortality rates throughout its life. It
exhibits Type _____ survivorship.
A.I
B.II
C.III - CORRECT ANSWER✔✔- II
____ is the proportion of individuals of an initial cohort that survives to each successive age
or stage of the life cycle.
A.Survivorship
B.Mortality
C.Age structure
D.Demography - CORRECT ANSWER✔✔- Survivorship
A large population made up of smaller populations linked by migration is a:
A.colonization.
B.island founder event.
C.metapopulation.
D.habitat patch. - CORRECT ANSWER✔✔- metapopulation
Both the land area (size) of an island and the _____ contribute to species diversity.
A.depth of the water surrounding the island
B.distance of the island from neighboring land masses
C.rock composition of the island
, D.climate of the island
E.proximity of the island to the equator - CORRECT ANSWER✔✔- distance of the island
from neighboring land masses
A group of biologists want to estimate a population of beetles living in an area around a pond.
They capture and mark 500 beetles, then release them on the first day. They return the
following day and catch a total of 400 individuals, 200 of which are marked. What is the
estimated population size for the beetles?
A.10,000
B.1000
C.500
D.250 - CORRECT ANSWER✔✔- 1,000
The coast redwood (Sequoia sempervirens) occurs naturally in a strip of habitat about 450
miles long and 5-35 miles wide, from southwest Oregon along the coast to just south of
Monterey, California. What aspect of the population ecology of the coast redwood does this
statement describe?
A.geographic range
B.population density
C.population size
D.type of distribution - CORRECT ANSWER✔✔- geographic range
Prairie dogs are rodents that live in colonies. Black-tailed prairie dog (Cynomys
ludovicianus) colonies typically have around 12 adult animals per hectare. What aspect of the
population ecology of the black-tailed prairie dog does this statement describe?
A.population density
B.population size
C.population growth
D.life history - CORRECT ANSWER✔✔- population density
The figures represent three hypothetical populations; each circle is an individual. Select the
type of distribution where food is most abundant near waterholes in the desert.
A.diagram A
Questions and CORRECT Answers
The maximum number of individuals of a given population the environment can support is
the environment's _____ for that population.
A.carrying capacity
B.effect on the intrinsic growth rate
C.population size
D.effect on the exponential growth rate - CORRECT ANSWER✔✔- Carrying Capacity
A severe drought is an example of a density-_____ factor that can influence population size.
The availability of nest sites is an example of a density-_____ factor.
A.dependent; independent
B.independent; dependent
C.dependent; dependent
D.independent; independent - CORRECT ANSWER✔✔- independent; dependent
When a population is small relative to its carrying capacity, its growth will be:
A.geometric.
B.exponential.
C.logistic.
D.both geometric and exponential.E.both geometric and logistic. - CORRECT
ANSWER✔✔- exponential
A scientist is studying a population of kangaroo rats in the southwestern deserts of the United
States. For approximately 4 years the population remains at or near 125 individuals. In the
fifth year, it falls to 30. This sharp decrease in population size is most likely the result of
density-_____ factors.
A.dependent
B.independent - CORRECT ANSWER✔✔- independent
,The term (ΔN/N0)/Δt (where N denotes the size of a population and t represents time) is used
to calculate:
A.a habitat's carrying capacity.
B.the "available" percentage of a habitat's carrying capacity.
C.a population's density.
D.a population's specific growth rate. - CORRECT ANSWER✔✔- a population's specific
growth rate
The common mud turtle experiences relatively uniform mortality rates throughout its life. It
exhibits Type _____ survivorship.
A.I
B.II
C.III - CORRECT ANSWER✔✔- II
____ is the proportion of individuals of an initial cohort that survives to each successive age
or stage of the life cycle.
A.Survivorship
B.Mortality
C.Age structure
D.Demography - CORRECT ANSWER✔✔- Survivorship
A large population made up of smaller populations linked by migration is a:
A.colonization.
B.island founder event.
C.metapopulation.
D.habitat patch. - CORRECT ANSWER✔✔- metapopulation
Both the land area (size) of an island and the _____ contribute to species diversity.
A.depth of the water surrounding the island
B.distance of the island from neighboring land masses
C.rock composition of the island
, D.climate of the island
E.proximity of the island to the equator - CORRECT ANSWER✔✔- distance of the island
from neighboring land masses
A group of biologists want to estimate a population of beetles living in an area around a pond.
They capture and mark 500 beetles, then release them on the first day. They return the
following day and catch a total of 400 individuals, 200 of which are marked. What is the
estimated population size for the beetles?
A.10,000
B.1000
C.500
D.250 - CORRECT ANSWER✔✔- 1,000
The coast redwood (Sequoia sempervirens) occurs naturally in a strip of habitat about 450
miles long and 5-35 miles wide, from southwest Oregon along the coast to just south of
Monterey, California. What aspect of the population ecology of the coast redwood does this
statement describe?
A.geographic range
B.population density
C.population size
D.type of distribution - CORRECT ANSWER✔✔- geographic range
Prairie dogs are rodents that live in colonies. Black-tailed prairie dog (Cynomys
ludovicianus) colonies typically have around 12 adult animals per hectare. What aspect of the
population ecology of the black-tailed prairie dog does this statement describe?
A.population density
B.population size
C.population growth
D.life history - CORRECT ANSWER✔✔- population density
The figures represent three hypothetical populations; each circle is an individual. Select the
type of distribution where food is most abundant near waterholes in the desert.
A.diagram A
