Question 1

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. 
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 2

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

Question 3

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

Question 4

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

Question 5

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

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

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 8

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

Accepted Answer

A) True 
 B)False

Question 9

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 10

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

Question 11

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

Question 12

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

Accepted Answer

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

Question 13

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. 
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 14

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

Accepted Answer

A) True 
 B)False

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. 
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

Plants can preempt both space and

Accepted Answer

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

Question 17

The home range of an animal is always defended.

Accepted Answer

A) True 
 B)False

Question 18

One way to reduce density dependence is

Accepted Answer

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

Question 19

The figure depicts which type of population growth?

Accepted Answer

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

Question 20

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 
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

Exam 11: Intraspecific Population Regulation

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

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

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

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

Social dominance can serve to

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

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

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

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

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

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

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

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

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

Which statement about stress is incorrect?

Plants can preempt both space and

The home range of an animal is always defended.

One way to reduce density dependence is

The figure depicts which type of population growth?

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

The Nature of Ecology

Climate

The Aquatic Environment

The Terrestrial Environment

Adaptation and Natural Selection

Plant Adaptations to the Environment

Animal Adaptations to the Environment

Properties of Populations

Population Growth

Life History

Species Interactions, population Dynamics, and Natural Selection

Interspecific Competition

Predation

Parasitism and Mutualism

Community Structure

Factors Influencing the Structure of Communities

Community Dynamics

Landscape Dynamics

Ecosystem Energetics

Decomposition and Nutrient Cycling

Biogeochemical Cycles

Terrestrial Ecosystems

Aquatic Ecosystems

Coastal and Wetland Ecosystems

Large-Scale Patterns of Biological Diversity

The Ecology of Climate Change

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