Determining Population Size Answers

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1
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Which of the following statements about exponential growth curves is true?

A
Exponential growth curves are common for R-selected species.
B
Exponential growth curves show fast growth rates followed by slow growth rates.
C
No organisms in nature experience exponential growth rates.
D
Exponential growth curves are S-shaped.
2
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If China has a population of 1,355,935,022 people and an area of 3,705,405 mi, what is the population density of China?

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A
77 people/mi
B
123 people/mi
C
0.00273 people/mi
D
366 people/mi
3

What is the main difference between logistic and exponential growth curves?

A
Logistic growth curves never increase exponentially.
B
Logistic growth curves stabilize when carrying capacity is reached.
C
Logistic growth curves decrease before they increase.
D
Logistic growth curves are identical to exponential growth curves.
4

Which of the following methods involves counting the number of organisms in a specific area?

A
mark/recapture
B
direct observation
C
sampling
D
indirect observation
5

A larger population density always indicates a larger population size.

A
T
B
F
6

For which method of determining population size is the population not aware of the sampler’s presence?

A
mark/recapture
B
direct observation
C
sampling
D
indirect observation
7

Which is not a difference between a population showing exponential growth and a population showing logistic growth?

A
food limits
B
disease limits
C
carrying capacity
D
mutation rate
8

A J-shaped curve is called a(n) _______.

A
logistic growth curve
B
exponential growth curve
C
linear growth curve
D
population growth curve
9

Which of the following is a density-independent factor?

A
disease
B
predation
C
natural disasters
D
stress
10

The mark and recapture method of determining population size is always more effective than the sampling method.

A
T
B
F

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