ECCB 403 Exam 2 Questions And Answers
2026 Update!!!
You observe a population in a given time, you
determine age distribution of the population and
A) Static life table data
based on samples taken at one time. This type of
data is called:
True or False. Under a static life table, if there is
no observation error, estimated survivorship
False
should always decline with age (assuming no
immigration or emigration).
What is the order in which you calculate during a A) (1) survivorship, (2) net reproductive rate, (3)
life table analysis? generation time
Generation time is (choose all correct answers)
A) the time that takes for a mother to generate
offspring within a season. C) the average age of mothers, accounting for
B) equivalent to gestation period. survivorship and fertility.
C) the average age of mothers, accounting for D) time that takes for a population to grow by a
survivorship and fertility. net reproductive rate.
D) time that takes for a population to grow by a
net reproductive rate.
Which of the following are potential problems
that complicate the capture-recapture method to
estimate survival rate?
A) Not all individuals are observed at every
B) individuals emigrate out of a sampled area.
sampling occasion.
C) capture probability is different among
B) individuals emigrate out of a sampled
individuals
area.
C) capture probability is different among
individuals
D) not all individuals die at the same time.
,Within a column of a sensitivity matrix S,
A) The reproductive value of the to-class i.
differences among the entries Sij are driven by:
, B) may not be proportional to the observed
stage densities because the population may be
Stable stage distribution of a population
in a transient phase, for example, after a
disturbance.
Suppose you have the
following matrix. Then,
A) x1 = a11n1 + a12n2 + a13n3
which of the following
is correct?
The figure below is the
lifecycle graph of
loggerhead sea turtles.
Each arrow has a time C) Individuals can stay in stage 3 over multiple
unit of one year. Which years.
of the following can be
concluded from the
figure?
According to the
A - (a11 a12 a13
lifecycle graph below,
which of the following a21 0 0
is the correct population
0 a32 0)
matrix?
Under compensatory density dependence
(not over-compensatory), transient dynamics
are expected after a perturbation because
(choose two)
A) population was perturbed away from the
A) population was perturbed away from the equilibrium point.
equilibrium point.
B) the structure of a population was away from
B) the structure of a population was away from stable stage distribution.
stable stage distribution.
C) they exhibit exponential growth.
D) they exhibit a periodic cycle.
The figure below shows C) Over-compensatory density dependence
the number of
individuals surviving
over one year. The
dashed curve shows
that the number of
individuals surviving
increases with the
population density
initially but declines
2026 Update!!!
You observe a population in a given time, you
determine age distribution of the population and
A) Static life table data
based on samples taken at one time. This type of
data is called:
True or False. Under a static life table, if there is
no observation error, estimated survivorship
False
should always decline with age (assuming no
immigration or emigration).
What is the order in which you calculate during a A) (1) survivorship, (2) net reproductive rate, (3)
life table analysis? generation time
Generation time is (choose all correct answers)
A) the time that takes for a mother to generate
offspring within a season. C) the average age of mothers, accounting for
B) equivalent to gestation period. survivorship and fertility.
C) the average age of mothers, accounting for D) time that takes for a population to grow by a
survivorship and fertility. net reproductive rate.
D) time that takes for a population to grow by a
net reproductive rate.
Which of the following are potential problems
that complicate the capture-recapture method to
estimate survival rate?
A) Not all individuals are observed at every
B) individuals emigrate out of a sampled area.
sampling occasion.
C) capture probability is different among
B) individuals emigrate out of a sampled
individuals
area.
C) capture probability is different among
individuals
D) not all individuals die at the same time.
,Within a column of a sensitivity matrix S,
A) The reproductive value of the to-class i.
differences among the entries Sij are driven by:
, B) may not be proportional to the observed
stage densities because the population may be
Stable stage distribution of a population
in a transient phase, for example, after a
disturbance.
Suppose you have the
following matrix. Then,
A) x1 = a11n1 + a12n2 + a13n3
which of the following
is correct?
The figure below is the
lifecycle graph of
loggerhead sea turtles.
Each arrow has a time C) Individuals can stay in stage 3 over multiple
unit of one year. Which years.
of the following can be
concluded from the
figure?
According to the
A - (a11 a12 a13
lifecycle graph below,
which of the following a21 0 0
is the correct population
0 a32 0)
matrix?
Under compensatory density dependence
(not over-compensatory), transient dynamics
are expected after a perturbation because
(choose two)
A) population was perturbed away from the
A) population was perturbed away from the equilibrium point.
equilibrium point.
B) the structure of a population was away from
B) the structure of a population was away from stable stage distribution.
stable stage distribution.
C) they exhibit exponential growth.
D) they exhibit a periodic cycle.
The figure below shows C) Over-compensatory density dependence
the number of
individuals surviving
over one year. The
dashed curve shows
that the number of
individuals surviving
increases with the
population density
initially but declines
