AnswersEnvironmental Science ADetermining Population Size

Determining Population Size Answers

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1
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Tagging animals is indicative of which type of method to determine population size?

A
mark/recapture
B
direct observation
C
sampling
D
indirect observation
2
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A J-shaped curve is called a(n) _______.

A
logistic growth curve
B
exponential growth curve
C
linear growth curve
D
population growth curve
3

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
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

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
6

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.
8

The equation total # of people in an area/(land) area in km2(or mi2) is used to calculate

A
growth rate
B
population density
C
death rate
D
carrying capacity
10

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
12

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

A
T
B
F
13

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
14

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
15

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
16

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
17

The equation total # of people in an area/(land) area in km2(or mi2) is used to calculate

A
growth rate
B
population density
C
death rate
D
carrying capacity
19

Tagging animals is indicative of which type of method to determine population size?

A
mark/recapture
B
direct observation
C
sampling
D
indirect observation
20

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?

Question illustration
A
77 people/mi
B
123 people/mi
C
0.00273 people/mi
D
366 people/mi

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