Question 1

In competition between P.caudatum and P.bursaria,neither species goes extinct because they utilize different resources.This can be considered as evidence for

Accepted Answer

A)  the extinction theory.
B)  Batesian mimicry.
C)  the coexistence hypothesis.
D)  the competitive exclusion principle.
E)  resource partitioning.

Question 2

Exponential growth is rare because resources usually limit population size.

Accepted Answer

A) True 
 B)False

Question 3

You are studying with a classmate who asks you about the concept of a replacement rate.She wants to know what happens to a population if the replacement rate is reached? She assumes the average human replacement rate is 2.0.What would you tell her?

Accepted Answer

A)  When replacement rate is reached,the population declines.The replacement rate is slightly greater than 2.0 because of childhood mortality.
B)  When replacement rate is reached,the population increases.The replacement rate is slightly lower than 2.0 to make up for increasing birth rates.
C)  When replacement rate is reached,the population begins to decline.The replacement rate is equal to 2.0 to replace both mother and father.
D)  When replacement rate is reached,the population is in equilibrium.The replacement rate is greater than 2.0 because some individuals die before they reproduce.
E)  When replacement rate is reached,the population begins to declinE.The replacement rate is slightly higher than 2.0 to make up for decreasing fertility rates.

Question 4

A group of interbreeding individuals occupying the same habitat at the same time is a(n)

Accepted Answer

A)  species.
B)  guild.
C)  population.
D)  niche.
E)  quadrat. C

Question 5

What is an example of a +/+ interaction?

Accepted Answer

A)  competition
B)  mutualism
C)  commensalism
D)  parasitism
E)  ammensalism

Question 6

The per capita growth rate of a population is best defined as

Accepted Answer

A)  the change in population size per unit time.
B)  having a constant value for a particular species.
C)  per capita birth rate minus per capita death rate.
D)  growth rate when a population is at equilbrium.
E)  logistic growth.

Question 7

What is the simplest method to measure population density in a given area?

Accepted Answer

A)  Count the number of organisms.
B)  Perform a line transect.
C)  Look for random dispersion patterns.
D)  Count the number of reproductive adults.
E)  Calculate a survivorship curvE.

Question 8

What is an example of a +/- interaction?

Accepted Answer

A)  competition
B)  mutualism
C)  commensalism
D)  predation
E)  amensalism

Question 9

World human population in 2012 was approximately

Accepted Answer

A)  6 billion.
B)  800 million.
C)  8 billion.
D)  7 billion.
E)  15.8 billion. D

Question 10

If the age structure of a country's population is evenly distributed,what prediction can confidently be made about the near future?

Accepted Answer

A)  The birth rate will decline.
B)  The death rate will decline.
C)  The population will not increase rapidly.
D)  The population will increase rapidly.
E)  The population will decrease rapidly. C

Question 11

A plot of population size vs time that displays a J-shape is indicative of

Accepted Answer

A)  parasitism.
B)  exponential growth.
C)  logistic growth.
D)  competition.
E)  density dependencE.

Question 12

The ecological footprint of an average Egyptian is greater than that of an average American.

Accepted Answer

A) True 
 B)False

Question 13

Parasitism usually affects populations in a ____________ manner.

Accepted Answer

A)  density-independent
B)  density-dependent
C)  inverse density-dependent
D)  cyclic
E)  random

Question 14

Several butterfly species that are edible to birds have very similar color patterns to the generally inedible monarch butterfly.This is best described as an example of what?

Accepted Answer

A)  Müllerian mimicry
B)  Batesian mimicry
C)  camouflage
D)  intimidation
E)  aposematic coloration

Question 15

Scientists have discovered that when they provide supplemental food for hares,their density tripled.Based on the figure above,showing cycles of lynx and hare populations over a century's time,what do you predict would happen to a lynx population in an area where hares were provided supplemental food?

Accepted Answer

A)  The lynx population would remain the same size because it is in equilibrium with its prey.
B)  The lynx population would increase simultaneously with the hare population.
C)  The lynx population would decrease as hares increased due to competition for space resources.
D)  The lynx population would increase 1-2 years after the hares increaseD.

Question 16

A survivorship curve with uniform death rates over time is most likely to be a type _______ curve.

Accepted Answer

A)  I
B)  II
C)  III
D)  IV
E)  V

Question 17

The relationship of disease-causing organisms to an infected rabbit is one of

Accepted Answer

A)  parasitism.
B)  commensalism.
C)  competition.
D)  herbivory.
E)  predation.

Question 18

A line transect would probably be the preferred method to quantify the population density of

Accepted Answer

A)  blackbirds.
B)  lions.
C)  clown fish.
D)  Ponderosa pines.
E)  swallowtail butterflies.

Question 19

Gopher tortoises regularly abandon their burrows and build new ones to accomadate their changing size and food requirements.The eastern indigo snake often makes its home in these abandoned burrows.How would you characterize this relationship and its effect on each member?

Accepted Answer

A)  parasitism: indigo snake +,gopher tortoise -
B)  competition: indigo snake -,gopher tortoise -
C)  commensalism: indigo snake 0,gopher tortoise +
D)  parasitism: indigo snake 0,gopher tortoise -
E)  commensalism: indigo snake +,gopher tortoise 0

Question 20

What information is used to calculate the age-specific fertility rate,mx?

Accepted Answer

A)  the net reproductive rate of females
B)  total number of offspring born to females within a reproductive age class
C)  the per capita growth rate of all females
D)  number of female offspring born to females within a reproductive age class
E)  the average age of first reproduction for females

Exam 44: Population Ecology

In competition between P.caudatum and P.bursaria,neither species goes extinct because they utilize different resources.This can be considered as evidence for

Correct Answer
verified

Exponential growth is rare because resources usually limit population size.

Correct Answer
verified

You are studying with a classmate who asks you about the concept of a replacement rate.She wants to know what happens to a population if the replacement rate is reached? She assumes the average human replacement rate is 2.0.What would you tell her?

Correct Answer
verified

A group of interbreeding individuals occupying the same habitat at the same time is a(n)

Correct Answer
verified
C

What is an example of a +/+ interaction?

Correct Answer
verified

The per capita growth rate of a population is best defined as

Correct Answer
verified

What is the simplest method to measure population density in a given area?

Correct Answer
verified

What is an example of a +/- interaction?

Correct Answer
verified

World human population in 2012 was approximately

Correct Answer
verified
D

If the age structure of a country's population is evenly distributed,what prediction can confidently be made about the near future?

Correct Answer
verified
C

A plot of population size vs time that displays a J-shape is indicative of

Correct Answer
verified

The ecological footprint of an average Egyptian is greater than that of an average American.

Correct Answer
verified

Parasitism usually affects populations in a ____________ manner.

Correct Answer
verified

Several butterfly species that are edible to birds have very similar color patterns to the generally inedible monarch butterfly.This is best described as an example of what?

Correct Answer
verified

Correct Answer
verified

A survivorship curve with uniform death rates over time is most likely to be a type _______ curve.

Correct Answer
verified

The relationship of disease-causing organisms to an infected rabbit is one of

Correct Answer
verified

A line transect would probably be the preferred method to quantify the population density of

Correct Answer
verified

Gopher tortoises regularly abandon their burrows and build new ones to accomadate their changing size and food requirements.The eastern indigo snake often makes its home in these abandoned burrows.How would you characterize this relationship and its effect on each member?

Correct Answer
verified

What information is used to calculate the age-specific fertility rate,mx?

Correct Answer
verified

Exam 44: Population Ecology

In competition between P.caudatum and P.bursaria,neither species goes extinct because they utilize different resources.This can be considered as evidence for

Correct AnswerverifiedShow Answer

Exponential growth is rare because resources usually limit population size.

Correct AnswerverifiedShow Answer

You are studying with a classmate who asks you about the concept of a replacement rate.She wants to know what happens to a population if the replacement rate is reached? She assumes the average human replacement rate is 2.0.What would you tell her?

Correct AnswerverifiedShow Answer

A group of interbreeding individuals occupying the same habitat at the same time is a(n)

Correct AnswerverifiedC

What is an example of a +/+ interaction?

Correct AnswerverifiedShow Answer

The per capita growth rate of a population is best defined as

Correct AnswerverifiedShow Answer

What is the simplest method to measure population density in a given area?

Correct AnswerverifiedShow Answer

What is an example of a +/- interaction?

Correct AnswerverifiedShow Answer

World human population in 2012 was approximately

Correct AnswerverifiedD

If the age structure of a country's population is evenly distributed,what prediction can confidently be made about the near future?

Correct AnswerverifiedC

A plot of population size vs time that displays a J-shape is indicative of

Correct AnswerverifiedShow Answer

The ecological footprint of an average Egyptian is greater than that of an average American.

Correct AnswerverifiedShow Answer

Parasitism usually affects populations in a ____________ manner.

Correct AnswerverifiedShow Answer

Several butterfly species that are edible to birds have very similar color patterns to the generally inedible monarch butterfly.This is best described as an example of what?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A survivorship curve with uniform death rates over time is most likely to be a type _______ curve.

Correct AnswerverifiedShow Answer

The relationship of disease-causing organisms to an infected rabbit is one of

Correct AnswerverifiedShow Answer

A line transect would probably be the preferred method to quantify the population density of

Correct AnswerverifiedShow Answer

Gopher tortoises regularly abandon their burrows and build new ones to accomadate their changing size and food requirements.The eastern indigo snake often makes its home in these abandoned burrows.How would you characterize this relationship and its effect on each member?

Correct AnswerverifiedShow Answer

What information is used to calculate the age-specific fertility rate,mx?

Correct AnswerverifiedShow Answer

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C

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D

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C

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