AnswersEnvironmental Science APopulation Size

Determining Population Size Answers

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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
2
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Yellowstone National Park has an average of about 4500 bison living in it. The park covers 3472 square miles. What is the population density of bison living in Yellowstone?

Question illustration
A
1.3 bison/mi
B
16 bison/mi
C
77 bison/mi
D
0.77 bison/mi
3

The formula to calculate population density is _______.

Question illustration
A
land area number of populations
B
number of populations land area
C
number of organisms in a region land area
D
land area number of organisms in a region
4

The three methods for determining population size are observation, mark and recapture, and sampling.

A
T
B
F
5

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

A
T
B
F
6

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.
7

A larger population density always indicates a larger population size.

A
T
B
F
8

When tagging animals specifically for the study of population size, scientists must do all of the following EXCEPT:

A
tag all individuals during the first study to ensure accurate results
B
make sure that markings do not harm the animal
C
ensure that tags are non-toxic and will not come off of the animal
D
ensure that the location and color of the tag does not draw the attention of predators
9

Which of the following samples has the greatest population density?

Question illustration
A
125,000 organisms in 2.5 mi
B
13,000 organisms in 1.0 mi
C
150,000 organisms in 4.0 mi
D
100,000 organisms in 0.5 mi
10

Which of the following is a density-independent factor?

A
disease
B
predation
C
natural disasters
D
stress

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