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Question 7 of 10
4.0 Points
Which of the following is true?
A. The population growth rate r can take on positive, negative, or zero values.
B. For any real population, the lowdensity population growth rate r
0
must be positive
C. Both A and B
D. Neither A nor B
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Question 8 of 10
4.0 Points
Given a constant population growth rate, the population size at any future time can be calculated by N
t
=N
o
e
rt
, where N
is population size at time zero and time t, e is the base of natural logs, t is time, and r is the population growth rate.
Given N
o
= 100 and r = 1.5, what will the population size be after 3 units of time?
A. ~450 individuals
B. ~900 individuals
C. ~9000 individuals
D. Cannot determine from the information provided
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Question 9 of 10
4.0 Points
The socalled carrying capacity K in the equation dN/dt=r
o
((KN)/K) is defined as:
Pick ONE:
A. The maximum size that the population can achieve under any circumstances.
B. The maximum population that can be sustained without destroying the environment it occupies
C. The population size which allows the maximum sustainable yield of individuals to be harvested from the
population
D. None of the above
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Question 10 of 10
4.0 Points
The rate of population growth is zero when:
A. R (from life tables) is zero
B. r is zero
C. Neither A nor B
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2013 Problem Set 4 Evo Lecture 9 and Eco Lectures 1012
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D. Both A and B
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 Spring '11
 Population Ecology, Evolution, population growth rate

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