Question 1

Why is territoriality an adaptive behaviour for songbirds maintaining populations at or near their carrying capacity?

Accepted Answer

A) Songbirds expend a tremendous amount of energy defending territories so that they spend less time feeding their young and fledgling mortality increases. 
B) Only the fittest males defend territories and they attract the fittest females so the best genes are conveyed to the next generation. 
C) Songbird males defend territories commensurate with the size from which they can derive adequate resources for themselves, their mate, and their chicks. 
D) Many individuals are killed in the agonistic behaviours that go along with territorial defence. 
E) Adult songbirds make improvements to the territories they inhabit so that they can produce successfully fledged chicks. 
A) Songbirds expend a tremendous amount of energy defending territories so that they spend less time feeding their young and fledgling mortality increases. 
B) Only the fittest males defend territories and they attract the fittest females so the best genes are conveyed to the next generation. 
C) Songbird males defend territories commensurate with the size from which they can derive adequate resources for themselves, their mate, and their chicks. 
D) Many individuals are killed in the agonistic behaviours that go along with territorial defence. 
E) Adult songbirds make improvements to the territories they inhabit so that they can produce successfully fledged chicks.

Question 2

The following questions refer to the figure below, which depicts the age structure of three populations.
  
-Assuming these age-structure diagrams describe human populations, which population(s)is (are)likely to experience zero population growth (ZPG)?

Accepted Answer

A) I 
B) II 
C) III 
D) I and II 
E) II and III 
A) I 
B) II 
C) III 
D) I and II 
E) II and III

Question 3

Please read the paragraph below and review the figure to answer the following question.
Researchers in the Netherlands studied the effects of parental care given in European kestrels over five years. The researchers transferred chicks among nests to produce reduced broods (three or four chicks), normal broods (five or six chicks), and enlarged broods (seven or eight chicks). They then measured the percentage of male and female parent birds that survived the following winter. (Both males and females provide care for chicks.)
   
Brood size manipulations in the kestrel: Effects on offspring and parent survival.
-Which of the following graphs illustrates the growth over several seasons of a population of snowshoe hares that were introduced to an appropriate habitat also inhabited by predators in northern Canada?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 4

Use the survivorship curves shown below to answer the following questions.
  
-Which of the following graphs illustrates the growth curve of a small population of rodents that has grown to reach a static carrying capacity?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 5

Which of the following examples would most accurately measure the density of the population being studied?

Accepted Answer

A) counting the number of prairie dog burrows per hectare 
B) counting the number of times a 1 kilometre transect is intersected by tracks of red squirrels after a snowfall 
C) counting the number of coyote droppings per hectare 
D) multiplying the number of moss plants counted in 10 quadrats of 1m² each by 100 to determine the density per kilometre² 
E) counting the number of zebras from airplane census observations 
A) counting the number of prairie dog burrows per hectare 
B) counting the number of times a 1 kilometre transect is intersected by tracks of red squirrels after a snowfall 
C) counting the number of coyote droppings per hectare 
D) multiplying the number of moss plants counted in 10 quadrats of 1m² each by 100 to determine the density per kilometre² 
E) counting the number of zebras from airplane census observations

Question 6

Use the survivorship curves shown below to answer the following questions.
  
-Which curve best describes survivorship in marine molluscs?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 7

Which of the following is characteristic of K-selected populations?

Accepted Answer

A) offspring with good chances of survival 
B) many offspring per reproductive episode 
C) small offspring 
D) a high intrinsic rate of increase 
E) early parental reproduction 
A) offspring with good chances of survival 
B) many offspring per reproductive episode 
C) small offspring 
D) a high intrinsic rate of increase 
E) early parental reproduction

Exam 53: Population Ecology

Why is territoriality an adaptive behaviour for songbirds maintaining populations at or near their carrying capacity?

The following questions refer to the figure below, which depicts the age structure of three populations. -Assuming these age-structure diagrams describe human populations, which population(s)is (are)likely to experience zero population growth (ZPG)?

Use the survivorship curves shown below to answer the following questions. -Which of the following graphs illustrates the growth curve of a small population of rodents that has grown to reach a static carrying capacity?

Which of the following examples would most accurately measure the density of the population being studied?

Use the survivorship curves shown below to answer the following questions. -Which curve best describes survivorship in marine molluscs?

Which of the following is characteristic of K-selected populations?

Introduction: Evolution and Themes of Biology

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

From Gene to Protein

Regulation of Gene Expression

Viruses

Dna Tools and Biotechnology

Genomes and Their Evolution

Descent With Modification: a Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity Ii: the Evolution of Seed Plants

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Plant Structure, Growth, and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons, Synapses, and Signalling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behaviour

An Introduction to Ecology and the Biosphere

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

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