Question 1

-According to the accompanying figure, the per capita ecological footprint for the United States is approximately ____ times the world average 2.7 hectares.

Accepted Answer

A)  ten
B)  five
C)  six
D)  twenty
E)  threeF) B) and E)
G) B) and D)

Question 2

Which density-dependent factor controls the size of a population?

Accepted Answer

A)  wind velocity
B)  light intensity
C)  nutrient supply
D)  amount of precipitation
E)  wave action in an intertidal zoneF) A) and B)
G) C) and E)

Question 3

An example of a density-independent limiting factor that influences population growth is ____.

Accepted Answer

A)  parasites
B)  temperature
C)  disease
D)  competition for food
E)  competition for shelterF) A) and E)
G) C) and E)

Question 4

A group of organisms that interbreed with one another more often than they interbreed with other members of their species defines a(n)  ____.

Accepted Answer

A)  community
B)  ecosystem
C)  population
D)  biosphere
E)  habitatF) A) and E)
G) C) and D)

Question 5

Match the distribution pattern with the environmental factor that influences population distribution.
-is often a result of asexual reproduction

Accepted Answer

A)  clumped
B)  near-uniform
C)  randomD) None of the above
E) A) and B)

Question 6

Four of the five answers listed below are characteristics of an opportunistic life history. Select the exception.

Accepted Answer

A)  early reproduction
B)  higher early mortality, shorter life
C)  fewer breeding episodes, many young per episode
D)  more parental investment
E)  result of r-selectionF) D) and E)
G) A) and C)

Question 7

Match the distribution pattern with the environmental factor that influences population distribution.
-involves intense competition for limited resources

Accepted Answer

A)  clumped
B)  near-uniform
C)  randomD) A) and B)
E) B) and C)

Question 8

The growth of a population per unit time is calculated by using this formula: G = r × N. What is the quantity r and how is it calculated?

Accepted Answer

A)  The quantity r is the exponential growth rate and is calculated by subtracting the number of deaths from the number of births.
B)  The quantity r is the per capita growth rate and is calculated by multiplying the number of births and the number of deaths.
C)  The quantity r is the per capita growth rate and is calculated by subtracting the number of deaths from the number of births.
D)  The quantity r is the biotic potential of a population and is calculated by adding the birth rate and the death rate.
E)  The quantity r is the monthly net increase of a population and is calculated by subtracting the number of births from the starting population size.F) A) and E)
G) A) and C)

Question 9

Estimates derived from plot sampling are most accurate when species are not very ____ and conditions across their habitat are uniform.

Accepted Answer

A)  well-defined
B)  small in size
C)  healthy
D)  mobile
E)  stationaryF) C) and D)
G) D) and E)

Question 10

Match the distribution pattern with the environmental factor that influences population distribution.
-some animals benefit by grouping together

Accepted Answer

A)  clumped
B)  near-uniform
C)  randomD) None of the above
E) All of the above

Question 11

Match each statement to the correct ecological term.
-For most of human history, all regions were in this stage, but today no country is.

Accepted Answer

A)  carrying capacity
B)  total fertility rate
C)  age structure
D)  replacement fertility rate
E)  reproductive baseF) A) and C)
G) A) and E)

Question 12

Match the distribution pattern with the environmental factor that influences population distribution.
-proximity to others neither benefits nor harms individuals

Accepted Answer

A)  clumped
B)  near-uniform
C)  randomD) A) and B)
E) All of the above

Question 13

Out of the countries listed, which has the largest ecological footprint?

Accepted Answer

A)  France
B)  Mexico
C)  China
D)  the United States
E)  IndiaF) B) and C)
G) A) and E)

Question 14

Exponential growth will occur as long as r ____ and is ____ zero.

Accepted Answer

A)  increases; greater than
B)  increases; less than
C)  remains constant; equal to
D)  remains constant; greater than
E)  remains constant; less thanF) A) and B)
G) A) and C)

Question 15

The carrying capacity of an environment is determined by the ____.

Accepted Answer

A)  net rate of reproduction of the female members
B)  frequency and intensity of natural disasters
C)  predation rate on the females
D)  severity of diseases suffered by both sexes
E)  sustainable supply of resources it providesF) D) and E)
G) A) and E)

Question 16

Four of the five answers are traits that influence the life history pattern of a living organism. Select the exception.

Accepted Answer

A)  age at which the organism begins to reproduce
B)  how often the organism reproduces.
C)  number of offspring produced per reproductive event
D)  length of the reproductive stage
E)  natural disasters that influence survivorshipF) B) and E)
G) A) and C)

Question 17

At time one, 50 butterflies were captured and marked with paint. Two days later, 100 were captured and 10 were previously marked. What is the estimated population size?

Accepted Answer

A)  100
B)  500
C)  1000
D)  5000
E)  10,000F) D) and E)
G) C) and D)

Question 18

The total number of individuals in a population is the ____.

Accepted Answer

A)  population distribution
B)  reproductive base
C)  biotic potential
D)  population size
E)  carrying capacityF) A) and E)
G) C) and D)

Question 19

A situation in which the birth rate equals the death rate is called ____.

Accepted Answer

A)  an intrinsic limiting factor
B)  exponential growth
C)  saturation
D)  zero population growth
E)  geometric growthF) A) and C)
G) B) and D)

Question 20

Match each statement to the correct ecological term.
-​The world's least developed countries are in this stage (for example, Afghanistan and Ethiopia) .

Accepted Answer

A)  carrying capacity
B)  total fertility rate
C)  age structure
D)  replacement fertility rate
E)  reproductive baseF) A) and B)
G) All of the above

Exam 40: Population Ecology

The carrying capacity of an environment is determined by the ____.

Correct AnswerverifiedShow Answer

Match the distribution pattern with the environmental factor that influences population distribution. -some animals benefit by grouping together

Correct AnswerverifiedShow Answer

Four of the five answers listed below are characteristics of an opportunistic life history. Select the exception.

Correct AnswerverifiedShow Answer

-According to the accompanying figure, the per capita ecological footprint for the United States is approximately ____ times the world average 2.7 hectares.

Correct AnswerverifiedShow Answer

Which density-dependent factor controls the size of a population?

Correct AnswerverifiedShow Answer

A situation in which the birth rate equals the death rate is called ____.

Correct AnswerverifiedShow Answer

A group of organisms that interbreed with one another more often than they interbreed with other members of their species defines a(n) ____.

Correct AnswerverifiedShow Answer

Estimates derived from plot sampling are most accurate when species are not very ____ and conditions across their habitat are uniform.

Correct AnswerverifiedShow Answer

Out of the countries listed, which has the largest ecological footprint?

Correct AnswerverifiedShow Answer

At time one, 50 butterflies were captured and marked with paint. Two days later, 100 were captured and 10 were previously marked. What is the estimated population size?

Correct AnswerverifiedShow Answer

An example of a density-independent limiting factor that influences population growth is ____.

Correct AnswerverifiedShow Answer

The growth of a population per unit time is calculated by using this formula: G = r × N. What is the quantity r and how is it calculated?

Correct AnswerverifiedShow Answer

Four of the five answers are traits that influence the life history pattern of a living organism. Select the exception.

Correct AnswerverifiedShow Answer

Match each statement to the correct ecological term. -For most of human history, all regions were in this stage, but today no country is.

Correct AnswerverifiedShow Answer

Match the distribution pattern with the environmental factor that influences population distribution. -involves intense competition for limited resources

Correct AnswerverifiedShow Answer

Match each statement to the correct ecological term. -​The world's least developed countries are in this stage (for example, Afghanistan and Ethiopia) .

Correct AnswerverifiedShow Answer

Exponential growth will occur as long as r ____ and is ____ zero.

Correct AnswerverifiedShow Answer

The total number of individuals in a population is the ____.

Correct AnswerverifiedShow Answer

Match the distribution pattern with the environmental factor that influences population distribution. -proximity to others neither benefits nor harms individuals

Correct AnswerverifiedShow Answer

Match the distribution pattern with the environmental factor that influences population distribution. -is often a result of asexual reproduction

Correct AnswerverifiedShow Answer

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Match each statement to the correct ecological term. -The world's least developed countries are in this stage (for example, Afghanistan and Ethiopia) .

Correct Answer
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Exponential growth will occur as long as r and is zero.

Correct Answer
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