Question 1

Which statement best explains survivorship curve B?

Accepted Answer

A) It is likely a species that provides little postnatal care, but lots of care for offspring during midlife as indicated by increased survivorship. 
B) This curve is likely of a species that produces lots of offspring, only a few of which are expected to survive. 
C) It is likely a species where no individuals in the cohort die when they are at 60-70% relative age. 
D) There was a mass emigration of young to middle-aged individuals in this cohort. 
E) Survivorship can only decrease; therefore, this curve could not happen in nature. 
A) It is likely a species that provides little postnatal care, but lots of care for offspring during midlife as indicated by increased survivorship. 
B) This curve is likely of a species that produces lots of offspring, only a few of which are expected to survive. 
C) It is likely a species where no individuals in the cohort die when they are at 60-70% relative age. 
D) There was a mass emigration of young to middle-aged individuals in this cohort. 
E) Survivorship can only decrease; therefore, this curve could not happen in nature.

Question 2

Which of the following sets of measurements is the most useful when studying populations?

Accepted Answer

A) density, dispersion, and demographics of a population 
B) gene frequency over time and the ratio of reproductive to nonreproductive individuals 
C) annual precipitation averages and mean annual temperatures 
D) minimum and maximum amounts of precipitation and annual temperature extremes 
E) ratio of predators and the number of immigrants and emigrants 
A) density, dispersion, and demographics of a population 
B) gene frequency over time and the ratio of reproductive to nonreproductive individuals 
C) annual precipitation averages and mean annual temperatures 
D) minimum and maximum amounts of precipitation and annual temperature extremes 
E) ratio of predators and the number of immigrants and emigrants

Question 3

A researcher has told you that she recorded 100 births in a population of 2000 individuals.What is the annual per capita birth rate and the expected number of births per year if the population size was 3000?

Accepted Answer

A) 0)2 and 10 
B) 0)5 and 150 
C) 0)05 and 100 
D) 0)05 and 150 
E) You cannot be sure because you were not given the death rate. 
A) 0)2 and 10 
B) 0)5 and 150 
C) 0)05 and 100 
D) 0)05 and 150 
E) You cannot be sure because you were not given the death rate.

Question 4

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 5

Exponential growth

Accepted Answer

A) when plotted, is a J-shaped curve. 
B) is more common in plants than in animals. 
C) can continue indefinitely in prokaryotic populations. 
D) keeps increasing due to emigration. 
E) all of the above 
A) when plotted, is a J-shaped curve. 
B) is more common in plants than in animals. 
C) can continue indefinitely in prokaryotic populations. 
D) keeps increasing due to emigration. 
E) all of the above

Question 6

In which of the following situations would you expect to find the largest number of K-selected individuals?

Accepted Answer

A) a recently abandoned agricultural field in Ohio 
B) the sand dune communities of south Lake Michigan 
C) the flora and fauna of a coral reef in the Caribbean 
D) South Florida after a hurricane 
E) a newly emergent volcanic island 
A) a recently abandoned agricultural field in Ohio 
B) the sand dune communities of south Lake Michigan 
C) the flora and fauna of a coral reef in the Caribbean 
D) South Florida after a hurricane 
E) a newly emergent volcanic island

Question 7

Which pattern of reproduction is correctly paired with a species?

Accepted Answer

A) iteroparity-Pacific salmon 
B) iteroparity-elephant 
C) semelparity-oak tree 
D) semelparity-rabbit 
E) semelparity-polar bear 
A) iteroparity-Pacific salmon 
B) iteroparity-elephant 
C) semelparity-oak tree 
D) semelparity-rabbit 
E) semelparity-polar bear

Question 8

To measure the population of lake trout in a 250-hectare lake,400 individual trout were netted and marked with a fin clip,then returned to the lake.The next week,the lake was netted again,and out of the 200 lake trout that were caught,50 had fin clips.Using the mark-recapture estimate,the lake trout population size could be closest to which of the following?

Accepted Answer

A) 200 
B) 400 
C) 1,600 
D) 80,000 
A) 200 
B) 400 
C) 1,600 
D) 80,000

Question 9

Logistic growth of a population is represented by dN/dt =

Accepted Answer

A)    
B) rN 
C) rN (K + N) 
D) rN   
E) rN   
A)    
B) rN 
C) rN (K + N) 
D) rN   
E) rN

Exam 53: Population Ecology

Which statement best explains survivorship curve B?

Which of the following sets of measurements is the most useful when studying populations?

A researcher has told you that she recorded 100 births in a population of 2000 individuals.What is the annual per capita birth rate and the expected number of births per year if the population size was 3000?

Exponential growth

In which of the following situations would you expect to find the largest number of K-selected individuals?

Which pattern of reproduction is correctly paired with a species?

Logistic growth of a population is represented by dN/dt =

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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