RENR Chapter 12 – Learning Curve: Revision Notes and Practice
Questions
Demography is the study of
ecosystems.
populations.
individuals.
communities.
biomes. - correct answer ✔✔populations.
A type III survivorship curve depicts a population with _____ mortality early in life and _____
survival later in life.
intermediate; intermediate
high; high
low; low
low; high
high; low - correct answer ✔✔high; high
Generally, when individuals leave a population of plants or animals through death or
emigration, what happens to the remaining individuals in the population?
They emigrate at higher rates.
They reproduce more slowly.
Their abundance decreases.
They grow larger and faster.
They compete more for food. - correct answer ✔✔They grow larger and faster.
Life tables are typically constructed only using data collected for
, sexually mature individuals.
mammals.
survival.
females.
fecundity. - correct answer ✔✔FEMALE
In the exponential growth model, a population increases faster over time because
the number of deaths in a population decreases over time.
the number of reproductive individuals in a population increases over time.
the amount of available resources increases over time.
the population's intrinsic growth rate increases over time. - correct answer ✔✔the number of
reproductive individuals in a population increases over time.
An island can support a population of 1,340 birds with an intrinsic annual growth rate of 0.23. If
this bird population is at its inflection point when the bird population size is plotted against
time, what is the population's current growth rate per year?
101 individuals
38 individuals
77 individuals
616 individuals
133 individuals - correct answer ✔✔77 individuals
If a population's net reproductive rate is _____, then the population will shrink.
equal to 1
less than 1
less than 0
greater than 2
Questions
Demography is the study of
ecosystems.
populations.
individuals.
communities.
biomes. - correct answer ✔✔populations.
A type III survivorship curve depicts a population with _____ mortality early in life and _____
survival later in life.
intermediate; intermediate
high; high
low; low
low; high
high; low - correct answer ✔✔high; high
Generally, when individuals leave a population of plants or animals through death or
emigration, what happens to the remaining individuals in the population?
They emigrate at higher rates.
They reproduce more slowly.
Their abundance decreases.
They grow larger and faster.
They compete more for food. - correct answer ✔✔They grow larger and faster.
Life tables are typically constructed only using data collected for
, sexually mature individuals.
mammals.
survival.
females.
fecundity. - correct answer ✔✔FEMALE
In the exponential growth model, a population increases faster over time because
the number of deaths in a population decreases over time.
the number of reproductive individuals in a population increases over time.
the amount of available resources increases over time.
the population's intrinsic growth rate increases over time. - correct answer ✔✔the number of
reproductive individuals in a population increases over time.
An island can support a population of 1,340 birds with an intrinsic annual growth rate of 0.23. If
this bird population is at its inflection point when the bird population size is plotted against
time, what is the population's current growth rate per year?
101 individuals
38 individuals
77 individuals
616 individuals
133 individuals - correct answer ✔✔77 individuals
If a population's net reproductive rate is _____, then the population will shrink.
equal to 1
less than 1
less than 0
greater than 2
