Question 1

Density-independent population control factors cause mortality

Accepted Answer

A) When the population becomes too large 
B) When the density becomes too high 
C) When the population becomes too small 
D) When the density becomes too low 
E) Regardless of population size 
A) When the population becomes too large 
B) When the density becomes too high 
C) When the population becomes too small 
D) When the density becomes too low 
E) Regardless of population size

Question 2

Which of the following is an intraspecific interaction?

Accepted Answer

A) Mutualism 
B) Territoriality 
C) Parasitism 
D) Predation 
E) All of these are examples of intraspecific interactions 
A) Mutualism 
B) Territoriality 
C) Parasitism 
D) Predation 
E) All of these are examples of intraspecific interactions

Question 3

Predation is considered to be a(n) _______________ factor.

Accepted Answer

A) Extrinsic 
B) Intrinsic 
C) Abiotic 
D) Biotic 
E) Extrinsic and biotic 
A) Extrinsic 
B) Intrinsic 
C) Abiotic 
D) Biotic 
E) Extrinsic and biotic

Question 4

A collection of separate populations that interact with each other is called a metapopulation.

Accepted Answer

A) True 
 B)False

Question 5

Exponential growth would be represented by a ____ curve?

Accepted Answer

A) J-shaped 
B) S-shaped 
C) straight 
D) bimodal 
E) linear 
A) J-shaped 
B) S-shaped 
C) straight 
D) bimodal 
E) linear

Question 6

The ability to produce rapid population overshoots can be a useful strategy for a species that tends to

Accepted Answer

A) Colonize new territory 
B) Maintain a firm position in its current habitat 
C) Be part of a climax community 
D) Develop intricate niche relationships 
E) Be part of a complex ecosystem 
A) Colonize new territory 
B) Maintain a firm position in its current habitat 
C) Be part of a climax community 
D) Develop intricate niche relationships 
E) Be part of a complex ecosystem

Question 7

In cases of exponential growth rates, a population ________ each year.

Accepted Answer

A) Increases at the same rate 
B) Is multiplied by a constant number 
C) Doubles 
D) Triples 
E) Increases by a constant number (one, ten, one hundred, etc.), depending on the system 
A) Increases at the same rate 
B) Is multiplied by a constant number 
C) Doubles 
D) Triples 
E) Increases by a constant number (one, ten, one hundred, etc.), depending on the system

Question 8

Island biogeography explains the phenomenon of _______ terrestrial species on islands small and far from the mainland when compared to larger islands that are closer to the mainland and have __________ terrestrial species.

Accepted Answer

A) Fewer; more 
B) More; fewer 
C) Larger; smaller 
D) Smaller; larger 
E) Larger; about the same number of 
A) Fewer; more 
B) More; fewer 
C) Larger; smaller 
D) Smaller; larger 
E) Larger; about the same number of

Question 9

Survivorship is determined by

Accepted Answer

A) The percentage of a cohort that survives to a certain age 
B) The number of individuals in a population that survive in a given year 
C) The number of years an individual of a certain age will probably live 
D) The probability that an individual will survive infancy 
E) The maximum life span that an individual of a given species could reach 
A) The percentage of a cohort that survives to a certain age 
B) The number of individuals in a population that survive in a given year 
C) The number of years an individual of a certain age will probably live 
D) The probability that an individual will survive infancy 
E) The maximum life span that an individual of a given species could reach

Question 10

If there is no migration, the size of a population is limited solely by interaction between

Accepted Answer

A) Natality and fertility 
B) Mortality and fecundity 
C) Mortality and survivorship 
D) Natality and mortality 
E) Life expectancy and survivorship 
A) Natality and fertility 
B) Mortality and fecundity 
C) Mortality and survivorship 
D) Natality and mortality 
E) Life expectancy and survivorship

Question 11

Which of the following is not a density-dependent population control factor?

Accepted Answer

A) Stress 
B) Overcrowding 
C) Predation 
D) Drought 
E) Competition 
A) Stress 
B) Overcrowding 
C) Predation 
D) Drought 
E) Competition

Question 12

White-tailed deer populations are at about the same levels as they were a century ago.

Accepted Answer

A) True 
 B)False

Question 13

You are studying an organism that is fairly large, matures slowly, lives fairly long, and cares for its offspring.This organism probably has a(n) _________________ population growth strategy.

Accepted Answer

A) K-adapted 
B) R-adapted 
C) Irregular 
D) Catastrophic 
E) R-adapted and irregular 
A) K-adapted 
B) R-adapted 
C) Irregular 
D) Catastrophic 
E) R-adapted and irregular

Question 14

The most common factor that affects birth and death rates within a population independently of density is

Accepted Answer

A) Fire 
B) Competition 
C) Weather 
D) Stress 
E) None of these is correct 
A) Fire 
B) Competition 
C) Weather 
D) Stress 
E) None of these is correct

Question 15

Widespread starvation is an example of _________ population control.

Accepted Answer

A) Predator-caused 
B) Biotic 
C) Density-dependent 
D) Density-independent 
E) Abiotic 
A) Predator-caused 
B) Biotic 
C) Density-dependent 
D) Density-independent 
E) Abiotic

Question 16

Logistic growth rates are those in which a population

Accepted Answer

A) Grows very slowly when conditions are good and when conditions are not optimal 
B) Grows rapidly when conditions are good, then slows as it approaches carrying capacity 
C) Overshoots and dies back repeatedly 
D) Remains significantly below carrying capacity 
E) Grows at a constant rate of increase per unit time 
A) Grows very slowly when conditions are good and when conditions are not optimal 
B) Grows rapidly when conditions are good, then slows as it approaches carrying capacity 
C) Overshoots and dies back repeatedly 
D) Remains significantly below carrying capacity 
E) Grows at a constant rate of increase per unit time

Question 17

When the similarities in population increases and decreases in prey and predators, it lead us to the conclusion that

Accepted Answer

A) The abundance of only the predator species can affect another species. 
B) The abundance of only the prey species can affect another species. 
C) The abundance of both the prey and predator can affect the other species. 
D) There is no relationship between the abundances of predator and prey species. 
A) The abundance of only the predator species can affect another species. 
B) The abundance of only the prey species can affect another species. 
C) The abundance of both the prey and predator can affect the other species. 
D) There is no relationship between the abundances of predator and prey species.

Question 18

How does island biogeography apply to ecosystems other than islands?

Accepted Answer

A) Relatively rare ecosystems such as coastal areas are more stable if they have high species diversity 
B) Habitats that are large and close to development are more adversely affected than smaller fragmented habitats 
C) Habitat fragmentation has formed islands of habitat in "oceans" of development 
D) Along with islands in oceans and lakes, the principles of island biogeography apply only to wetland areas 
E) Island biogeography is only concerned with islands in oceans and lakes 
A) Relatively rare ecosystems such as coastal areas are more stable if they have high species diversity 
B) Habitats that are large and close to development are more adversely affected than smaller fragmented habitats 
C) Habitat fragmentation has formed islands of habitat in "oceans" of development 
D) Along with islands in oceans and lakes, the principles of island biogeography apply only to wetland areas 
E) Island biogeography is only concerned with islands in oceans and lakes

Question 19

Which of the following is a biotic population control mechanism?

Accepted Answer

A) Nutrients 
B) Precipitation 
C) Day length 
D) Climate 
E) Pathogens 
A) Nutrients 
B) Precipitation 
C) Day length 
D) Climate 
E) Pathogens

Question 20

The longest period of life that a given type of organism can reach is known as

Accepted Answer

A) Survivorship 
B) Life span 
C) Life expectancy 
D) Mortality 
E) Fecundity 
A) Survivorship 
B) Life span 
C) Life expectancy 
D) Mortality 
E) Fecundity

Exam 6: Population Biology

Density-independent population control factors cause mortality

Which of the following is an intraspecific interaction?

Predation is considered to be a(n) _______________ factor.

A collection of separate populations that interact with each other is called a metapopulation.

Exponential growth would be represented by a ____ curve?

The ability to produce rapid population overshoots can be a useful strategy for a species that tends to

In cases of exponential growth rates, a population ________ each year.

Island biogeography explains the phenomenon of _______ terrestrial species on islands small and far from the mainland when compared to larger islands that are closer to the mainland and have __________ terrestrial species.

Survivorship is determined by

If there is no migration, the size of a population is limited solely by interaction between

Which of the following is not a density-dependent population control factor?

White-tailed deer populations are at about the same levels as they were a century ago.

You are studying an organism that is fairly large, matures slowly, lives fairly long, and cares for its offspring.This organism probably has a(n) _________________ population growth strategy.

The most common factor that affects birth and death rates within a population independently of density is

Widespread starvation is an example of _________ population control.

Logistic growth rates are those in which a population

When the similarities in population increases and decreases in prey and predators, it lead us to the conclusion that

How does island biogeography apply to ecosystems other than islands?

Which of the following is a biotic population control mechanism?

The longest period of life that a given type of organism can reach is known as

Understanding Our Environment

Principles of Science and Systems

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Evolution, Biological Communities, and Species Interactions

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Environmental Health and Toxicology

Food and Hunger

Farming: Conventional and Sustainable Practices

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Ecological Economics

Environmental Policy, Law, and Planning

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Island biogeography explains the phenomenon of _ terrestrial species on islands small and far from the mainland when compared to larger islands that are closer to the mainland and have ____ terrestrial species.