Chapter 10
1. Type I survivorship curve indicates
a)
b)
c)
d)
e)
low juvenile mortality and high mortality in older adults.
high juvenile mortality and low mortality in older adults.
low juvenile mortality and low mortality in older adults.
low juvenile mortality and high mortality in older adults.
equal chance of dying at any age.
Answer: A
2. Fecundity is another term for the net reproductive rate.
Answer: F
3. Type II survivorship curve indicates
a)
b)
c)
d)
e)
low juvenile mortality and high mortality in older adults.
high juvenile mortality and low mortality in older adults.
low juvenile mortality and low mortality in older adults.
low juvenile mortality and high mortality in older adults.
equal chance of dying at any age.
Answer: E
4. The geometric rate of increase can be used to estimate changes in population size in
species with non-overlapping generations.
Answer: T
5. Type III survivorship curve indicates
a)
b)
c)
d)
e)
low juvenile mortality and high mortality in older adults.
high juvenile mortality and low mortality in older adults.
low juvenile mortality and low mortality in older adults.
low juvenile mortality and high mortality in older adults.
equal chance of dying at any age.
Answer: E
6. The per capita rate of increase can be used to estimate changes in population size in
species with non-overlapping generations.
Answer: F
7. Humans would best be represented by which of the following survivorships curves?
a)
b)
c)
d)
e)
I
II
III
IV
none of the above
Answer: A
8. Although the dispersal rate of Africanized bees is impressive, it still pales in
comparison to the dispersal rate of the collard dove.
Answer: F
9. Organisms that produce many offspring would best be characterized by which of the
following?
a)
b)
c)
d)
e)
a convex survivorship curve
a concave survivorship curve
a linear curve survivorship curve
a sigmoidal survivorship curve
none of the above
Answer: B
10. Many sedentary organisms have a ‘dispersing stage’ and rely on vectors such as
animals, water, or wind to aid in their spread.
Answer: T
11. The age distribution of a population can reveal
a)
b)
c)
d)
e)
growth potential.
survivorship.
reproduction.
both growth potential and survivorship.
growth potential, survivorship and reproduction.
Answer: E
12. The geometric rate of increase cannot be a negative number.
Answer: T
13. Which of the following are mismatched?
a)
b)
c)
d)
e)
nx : mortality rate
lx : survivorship history
R0 : net reproductive rate
mx: average number offspring per individual
x : age/ time interval
Answer: A
14. The per capita rate of increase cannot be a negative number.
Answer: F
15. The ‘net reproduction rate’ equals
a)
b)
c)
d)
e)
(∑x lxmx)/ R0.
∑ λ nx.
∑ lx mx.
∑ x lx mx.
none of the above
Answer: C
16. Individuals born during a specified time period are a grouped as a
__________________________.
Answer: cohort
17. The ‘mean generation time’ of a population equals
a)
b)
c)
d)
e)
(∑ xlxmx)/ R0.
∑ λ nx.
∑ lx mx.
∑ x lx mx.
none of the above
Answer: A
18. Which of the following statements regarding ‘mean generation time’ is false?
a)
b)
c)
d)
e)
It is generally calculated only for the females in a population.
It is the average time from offspring to offspring.
It can be calculated using a fecundity schedule and life table.
It can be used to calculate the geometric growth rate.
It can be used to calculate the per capita rate of increase.
Answer: D
19. Which of the following cannot be determined using a fecundity schedule combined
with a life table?
a)
b)
c)
d)
e)
per capital rate of increase
net reproductive rate
mean generation time
dispersal rates
geometric rate of increase
Answer: D
20. __________________ is the process by which individuals disperse out of a
population.
Answer: Emigration
21. Which of the following equations bests represents the per capita rate of increase?
a)
b)
c)
d)
e)
r = T/(ln R0)
r = (ln R0)/T
λ = Nt/(Nt+1)
λ = (Nt+1)/Nt
none of the above
Answer: B
22. Which of the following equations bests represents the geometric rate of increase?
a)
b)
c)
d)
e)
r = T/(ln R0)
r = (ln R0)/T
λ = (Nt+1)/Nt
λ = Nt/(Nt+1)
none of the above
Answer: C
23. Korpimaki and Norrdahl’s research on voles (prey) and kestrels and owl (predators)
suggest that the predator’s population dynamics are
a)
b)
c)
d)
a functional response.
a numerical response.
in response to vole densities.
both a functional response and a numerical response.
e) both a numerical response and in response to vole densities.
Answer: B