Chapter 11
1. Nt = N0 λt represents
a)
b)
c)
d)
e)
annual growth rate.
geometric population growth.
exponential growth rate.
logistic growth.
none of the above
Answer: B
2. dN/dt = rmaxN [(K – N)/K] represents
a)
b)
c)
d)
e)
annual growth rate.
geometric population growth.
exponential growth rate.
logistic growth.
none of the above
Answer: D
3. In the most basic terms a population’s growth is a function of births and deaths.
Answer: T
4. dN/dt = rmaxN represents
a)
b)
c)
d)
e)
annual growth rate.
geometric population growth.
exponential population growth.
logistic growth.
none of the above
Answer: C
5. An annual plant when initially colonizing an area will probably demonstrate
a)
b)
c)
d)
e)
annual growth rate.
geometric population growth.
exponential growth rate.
logistic growth.
none of the above
Answer: B
6. The exponential population growth equation can be used for
a) populations with overlapping generations.
b) populations experiencing continuous growth.
c) populations with nonpulsed reproduction.
d) both populations with overlapping generations and populations experiencing
continuous growth.
e) both populations with overlapping generations, populations experiencing continuous
growth and populations with nonpulsed reproduction.
Answer: E
7. A population is __________________________ if N>K and the per capita rate of
increase is negative.
Answer: declining
8. There is a positive correlation between body size and maximum per capita rate of
increase.
Answer: F
9. Which of the following is/are mismatched?
a)
b)
c)
d)
e)
rmax= intrinsic rate of increase
K = carrying capacity
Nt = annual growth rate
t = time interval
dN/dt = rate of population change
Answer: C
10. When r = 0 then the population stops growing and N = K.
Answer: T
11. ‘N/K’ for a population can represent
a)
b)
c)
d)
e)
environmental resistance.
logistic component.
population size decrease.
both environmental resistance and logistic component.
both logistic component and population size decrease.
Answer: A
12. The factors that determine carrying capacity include all of the following except:
a)
b)
c)
d)
e)
space.
disease.
food.
competition.
none of the above
Answer: E
13. The biotic potential of an organism produces the leveling off at carrying capacity in
the logistic growth curve.
Answer: F
14. Grant and Grants’ study on the large cactus finches (Geospiza conirostris) positively
correlates ____________________ and egg clutches.
Answer: rainfall
15. Density dependent factors include all of the following except:
a)
b)
c)
d)
e)
competition.
disease.
predation.
temperature.
none of the above
Answer: D
16. Human populations are clumped on a large scale with the greatest concentration in
a)
b)
c)
d)
e)
Africa.
Asia.
Europe.
North America.
South America.
Answer: B
17. Occasionally density independent factors can influence populations in a density
dependent manner.
Answer: T
18. If the age distribution diagram is bottom heavy or pyramidal in shape, this indicates
that the population is
a)
b)
c)
d)
e)
stable.
declining.
growing slowly.
growing rapidly.
cannot be determined
Answer: D
19. If the age distribution diagram is bell shaped or the number of individual in each age
class is evenly distributed, this indicates that the population is
a)
b)
c)
d)
e)
stable.
declining.
growing slowly.
growing rapidly.
cannot be determined
Answer: A
20. Generally larger animals have higher rates of rmax and more variable populations
compared to small organisms.
Answer: F
21. If the age distribution diagram has the smallest concentration of individuals in the
bottom portion or is considered to be an urn shape, this indicates that
a)
b)
c)
d)
e)
the population is stable
the population is declining
the population is growing slowly
the population is growing rapidly
cannot be determined
Answer: B
22. Which of the following statements is/are true?
a) Population growth in humans can be represented by an S curve.
b) The human population has reached carry capacity.
c) Population growth in humans is exponential.
d) Human population growth is not effected by density dependent factors.
e) Both population growth in humans can be represented by an S curve and the human
population has reached carry capacity.
Answer: C
23. The sigmoidal growth curve can be represented by lag, log and stationary phases.
Answer: T