Question 1

Which statement about the impact of dams on cottonwood forests is false?

Accepted Answer

A)  Damming reduces growth of established cottonwoods downstream. 
B)  Damming increases mortality of established cottonwoods downstream. 
C)  By reducing flooding downstream, damming improves cottonwood seed germination. 
D)  The timing of water release from a dam can greatly affect cottonwood seed germination. 
E)  Careful management of flow through dams can greatly reduce harmful impacts on cottonwoods downstream. 
A)  Damming reduces growth of established cottonwoods downstream. 
B)  Damming increases mortality of established cottonwoods downstream. 
C)  By reducing flooding downstream, damming improves cottonwood seed germination. 
D)  The timing of water release from a dam can greatly affect cottonwood seed germination. 
E)  Careful management of flow through dams can greatly reduce harmful impacts on cottonwoods downstream.

Question 2

Rates of gene flow can be estimated from similarity in allele frequencies among populations.

Accepted Answer

A) True 
 B)False

Question 3

Among fish species,an "opportunistic" life history is characterized by

Accepted Answer

A)  high juvenile survival, large numbers of offspring, and early maturity. 
B)  high juvenile survival, large numbers of offspring, and late maturity. 
C)  low juvenile survival, low number of offspring, and early maturity. 
D)  traits that maximize colonizing ability for environments that do not vary much in time or space. 
E)  traits that maximize colonizing ability for environments that are very stressful. 
A)  high juvenile survival, large numbers of offspring, and early maturity. 
B)  high juvenile survival, large numbers of offspring, and late maturity. 
C)  low juvenile survival, low number of offspring, and early maturity. 
D)  traits that maximize colonizing ability for environments that do not vary much in time or space. 
E)  traits that maximize colonizing ability for environments that are very stressful.

Question 4

The study of the relationship between climate and the timing of ecological events is called

Accepted Answer

A)  ecology. 
B)  phenology. 
C)  oenology. 
D)  climatology. 
E)  life history theory. 
A)  ecology. 
B)  phenology. 
C)  oenology. 
D)  climatology. 
E)  life history theory.

Question 5

The number of eggs laid by a female is called her

Accepted Answer

A)  fertility. 
B)  gonadosomatic index. 
C)  growth form. 
D)  rotundity. 
E)  fecundity. 
A)  fertility. 
B)  gonadosomatic index. 
C)  growth form. 
D)  rotundity. 
E)  fecundity.

Question 6

"Riparian" refers to plant communities occurring

Accepted Answer

A)  in the tropics. 
B)  at high altitudes. 
C)  along the edges of deserts. 
D)  in permanently flooded areas. 
E)  in transitions between riverbanks and upland areas. 
A)  in the tropics. 
B)  at high altitudes. 
C)  along the edges of deserts. 
D)  in permanently flooded areas. 
E)  in transitions between riverbanks and upland areas.

Question 7

__________ show more variation in life history traits than any other group.

Accepted Answer

A)  All of the choices show equal amounts of variation in life history traits. 
B)  Mammals 
C)  Birds 
D)  Reptiles 
E)  Fish 
A)  All of the choices show equal amounts of variation in life history traits. 
B)  Mammals 
C)  Birds 
D)  Reptiles 
E)  Fish

Question 8

The principle of allocation states

Accepted Answer

A)  if an organism uses energy for one function it reduces the amount of energy available for other functions. 
B)  organisms have a tendency to select the smallest prey available rather than exert more energy in capturing larger prey. 
C)  organisms that build larger nests produce fewer offspring. 
D)  organisms have a tendency to allocate more time and energy to a single preferred offspring while neglecting others. 
E)  plants allocate their energy such that larger seedlings come from smaller seeds. 
A)  if an organism uses energy for one function it reduces the amount of energy available for other functions. 
B)  organisms have a tendency to select the smallest prey available rather than exert more energy in capturing larger prey. 
C)  organisms that build larger nests produce fewer offspring. 
D)  organisms have a tendency to allocate more time and energy to a single preferred offspring while neglecting others. 
E)  plants allocate their energy such that larger seedlings come from smaller seeds.

Question 9

Grime's classification of plant life histories focuses attention on

Accepted Answer

A)  stress and disturbance. 
B)  stress and nutrient availability. 
C)  disturbance and gene flow. 
D)  disturbance and plant species diversity. 
E)  r- vs. K-selection. 
A)  stress and disturbance. 
B)  stress and nutrient availability. 
C)  disturbance and gene flow. 
D)  disturbance and plant species diversity. 
E)  r- vs. K-selection.

Which statement about the impact of dams on cottonwood forests is false?

Rates of gene flow can be estimated from similarity in allele frequencies among populations.

Among fish species,an "opportunistic" life history is characterized by

The study of the relationship between climate and the timing of ecological events is called

The number of eggs laid by a female is called her

"Riparian" refers to plant communities occurring

__________ show more variation in life history traits than any other group.

The principle of allocation states

Grime's classification of plant life histories focuses attention on

Introduction to Ecology Historical Foundations and Developing Frontiers

Life on Land

Life in Water

Population Genetics and Natural Selection

Temperature Relations

Water Relations

Energy and Nutrient Relations

Socail Relations

Population Distribution and Abundance

Population Dynamics

Population Growth

Competition

Exploitative Interactions Predation, herbivory, parasitism, and Disease

Mutualism

Species Abundance and Diversity

Species Interactions and Community Structure

Primary Production and Energy Flow

Nutrient Cycling and Retention

Succession and Stability

Landscape Ecology

Geographic Ecology

Global Ecology

Filters

Exam 12: Life Histories

Which statement about the impact of dams on cottonwood forests is false?

Rates of gene flow can be estimated from similarity in allele frequencies among populations.

Among fish species,an "opportunistic" life history is characterized by

The study of the relationship between climate and the timing of ecological events is called

The number of eggs laid by a female is called her

"Riparian" refers to plant communities occurring

__________ show more variation in life history traits than any other group.

The principle of allocation states

Grime's classification of plant life histories focuses attention on

Introduction to Ecology Historical Foundations and Developing Frontiers

Life on Land

Life in Water

Population Genetics and Natural Selection

Temperature Relations

Water Relations

Energy and Nutrient Relations

Socail Relations

Population Distribution and Abundance

Population Dynamics

Population Growth

Competition

Exploitative Interactions Predation, herbivory, parasitism, and Disease

Mutualism

Species Abundance and Diversity

Species Interactions and Community Structure

Primary Production and Energy Flow

Nutrient Cycling and Retention

Succession and Stability

Landscape Ecology

Geographic Ecology

Global Ecology

Filters