Question 1

Which of the following represents an example of density-independent growth?

Accepted Answer

A)  increased amphibian reproduction following a wet season
B)  exponential population growth
C)  logistic population growth
D)  increase in predator population following increase in prey abundance

Question 2

One way to reduce density dependence is

Accepted Answer

A)  dispersal.
B)  via reduced resources.
C)  via increased density.
D)  via increased stress.

Question 3

Fire is an example of a density-independent factor that affects the size of a population.

Accepted Answer

A) True 
 B)False

Question 4

By organizing socially into a group,individual animals may benefit by

Accepted Answer

A)  coexisting peacefully instead of fighting with group members for dominance.
B)  reducing intraspecific competition for food.
C)  increasing access to a common food supply.
D)  equalizing the number of offspring produced by each group member.

Question 5

A small population size of flowers can pose problems for the plant as a result of

Accepted Answer

A)  poor quality soil.
B)  lack of space.
C)  lack of resources.
D)  lack of pollinator visitation.

Question 6

The home range of an animal is always defended.

Accepted Answer

A) True 
 B)False

Question 7

What might be an unforeseen outcome of planting soybean plants at high densities in a field?

Accepted Answer

A)  reduced seed production per plant
B)  increased plant size
C)  increased seed size
D)  decreased plant mortality

Question 8

The fewest number of individuals necessary to ensure the long term survival of a population is known as the

Accepted Answer

A)  carrying capacity.
B)  resource population.
C)  lowest common denominator.
D)  minimum viable population.

Question 9

When experimental plants (e.g.,Atriplex prostrata) were grown at high densities,

Accepted Answer

A)  individual growth rates increased.
B)  the proportion of resources allocated to leaf production increased.
C)  individual plant weight increased.
D)  net photosynthetic rate increased.

Question 10

Social dominance can serve to

Accepted Answer

A)  increase competition.
B)  increase the number of mating pairs.
C)  limit population size.
D)  decrease the survival rate of a pack.

Question 11

Which of the following organisms would be most likely to present evidence of self-thinning?

Accepted Answer

A)  frogs
B)  barnacles
C)  lions
D)  birds

Question 12

Instead of coping with stress,some animals ________ by leaving the population to seek vacant habitats.

Accepted Answer

The answer of Instead of coping with stress,some animals ________...

Question 13

Plants can preempt both space and

Accepted Answer

A)  time.
B)  resources.
C)  mates.
D)  territory.

Question 14

The form of competition in which growth and reproduction are depressed equally across individuals in a population as the intensity of competition increases is called

Accepted Answer

A)  scramble competition.
B)  contest competition.
C)  exploitation competition.
D)  interference competition.

Question 15

Which statement about stress is incorrect?

Accepted Answer

A)  Stress increases as population density increases.
B)  Stress may trigger the release of specific chemical signals or pheromones.
C)  Stress can stimulate growth and increase the rate of reproduction.
D)  Stress may result in increased vulnerability to disease.

Question 16

The progressive decline in density and increase in biomass of remaining individuals in a population is known as ________-thinning.

Accepted Answer

The answer of The progressive decline in density and increase...

Question 17

Increasing density does not affect the body mass of individual organisms.

Accepted Answer

A) True 
 B)False

Question 18

As intraspecific competition increases,growth and development are affected first,followed by individual survival and reproduction.

Accepted Answer

A) True 
 B)False

Question 19

The figure depicts which type of population growth?

Accepted Answer

A)  exponential
B)  normal
C)  logistic
D)  geometric

Question 20

Competition among individuals of the same species is referred to as ________ competition.

Accepted Answer

The answer of Competition among individuals of the same species...

Exam 11: Intraspecific Population Regulation

Plants can preempt both space and

Correct AnswerverifiedShow Answer

The fewest number of individuals necessary to ensure the long term survival of a population is known as the

Correct AnswerverifiedShow Answer

The form of competition in which growth and reproduction are depressed equally across individuals in a population as the intensity of competition increases is called

Correct AnswerverifiedShow Answer

When experimental plants (e.g.,Atriplex prostrata) were grown at high densities,

Correct AnswerverifiedShow Answer

A small population size of flowers can pose problems for the plant as a result of

Correct AnswerverifiedShow Answer

One way to reduce density dependence is

Correct AnswerverifiedShow Answer

Which of the following organisms would be most likely to present evidence of self-thinning?

Correct AnswerverifiedShow Answer

Which statement about stress is incorrect?

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The home range of an animal is always defended.

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Which of the following represents an example of density-independent growth?

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Competition among individuals of the same species is referred to as ________ competition.

Correct AnswerverifiedShow Answer

Increasing density does not affect the body mass of individual organisms.

Correct AnswerverifiedShow Answer

Social dominance can serve to

Correct AnswerverifiedShow Answer

Fire is an example of a density-independent factor that affects the size of a population.

Correct AnswerverifiedShow Answer

As intraspecific competition increases,growth and development are affected first,followed by individual survival and reproduction.

Correct AnswerverifiedShow Answer

What might be an unforeseen outcome of planting soybean plants at high densities in a field?

Correct AnswerverifiedShow Answer

The figure depicts which type of population growth?

Correct AnswerverifiedShow Answer

Instead of coping with stress,some animals ________ by leaving the population to seek vacant habitats.

Correct AnswerverifiedShow Answer

The progressive decline in density and increase in biomass of remaining individuals in a population is known as ________-thinning.

Correct AnswerverifiedShow Answer

By organizing socially into a group,individual animals may benefit by

Correct AnswerverifiedShow Answer

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