Question 1

The organisms associated with patches of floating ocean vegetation would be an example of:

Accepted Answer

A)  random dispersion 
B)  density-independent distribution 
C)  uniform dispersion 
D)  density-dependent distribution 
E)  clumped dispersion 
A)  random dispersion 
B)  density-independent distribution 
C)  uniform dispersion 
D)  density-dependent distribution 
E)  clumped dispersion

Question 2

Less-developed countries are most likely to be characterized by:

Accepted Answer

A)  low fertility rates. 
B)  high GNI PPPs. 
C)  low doubling times. 
D)  high use of contraception. 
E)  high infant mortality rates. 
A)  low fertility rates. 
B)  high GNI PPPs. 
C)  low doubling times. 
D)  high use of contraception. 
E)  high infant mortality rates.

Question 3

Match between columns
                        Premises: severe blizzard
predation
competition
affect populations in unpredictable ways
disease
can cause an decrease in birth rate
typically studied in laboratories
generally causes an increase in death rate

Accepted Answer

The Answer of density dependent and density independent is...

Question 4

Most insects and invertebrates are said to be iteroparous .

Accepted Answer

A) True 
 B)False

Question 5

Figure 53-1   The equation that would best describe the curve in the accompanying figure is:

Accepted Answer

A)  dN / dt = r . 
B)  dN / dt = N . 
C)  dN / dt = rN . 
D)  dN / dt = rN + I − e . 
E)  dN / dt = rN ( K − N ). 
A)  dN / dt = r . 
B)  dN / dt = N . 
C)  dN / dt = rN . 
D)  dN / dt = rN + I − e . 
E)  dN / dt = rN ( K − N ).

Question 6

Consumption overpopulation is a problem in developing countries.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following consists of organisms, all of which share a common gene pool?

Accepted Answer

A)  a community 
B)  a population 
C)  a biosphere 
D)  an ecosystem 
E)  a landscape 
A)  a community 
B)  a population 
C)  a biosphere 
D)  an ecosystem 
E)  a landscape

Question 8

Surplus individuals in the ____ disperse and find another habitat in which to settle and reproduce.

Accepted Answer

A)  metahabitats 
B)  sink habitats 
C)  landscape 
D)  source habitats 
E)  K -selected habitats. 
A)  metahabitats 
B)  sink habitats 
C)  landscape 
D)  source habitats 
E)  K -selected habitats.

Question 9

The world human population has increased dramatically during the past few centuries due to:

Accepted Answer

A)  increased immigration. 
B)  increased emigration. 
C)  decreased death rates. 
D)  increased birth rates. 
E)  decreased birth rates. 
A)  increased immigration. 
B)  increased emigration. 
C)  decreased death rates. 
D)  increased birth rates. 
E)  decreased birth rates.

Question 10

The Earth's carrying capacity is:

Accepted Answer

A)  1 billion. 
B)  1 million. 
C)  4 billion. 
D)  16 billion. 
E)  unknown. 
A)  1 billion. 
B)  1 million. 
C)  4 billion. 
D)  16 billion. 
E)  unknown.

Question 11

By the end of the 21st century, it is expected that the human population will:

Accepted Answer

A)  increase at the fastest rate in the highly developed countries. 
B)  increase at the fastest rate in the less developed countries. 
C)  increase at similar rates in all countries. 
D)  decrease at similar rates in all countries. 
E)  achieve zero population growth. 
A)  increase at the fastest rate in the highly developed countries. 
B)  increase at the fastest rate in the less developed countries. 
C)  increase at similar rates in all countries. 
D)  decrease at similar rates in all countries. 
E)  achieve zero population growth.

Question 12

In a population characterized by type III survivorship, the probability of survival ____ with age.

Accepted Answer

A)  increases 
B)  decreases 
C)  does not change 
D)  first decreases then increases 
E)  first increases then decreases 
A)  increases 
B)  decreases 
C)  does not change 
D)  first decreases then increases 
E)  first increases then decreases

Question 13

At zero population growth:

Accepted Answer

A)  b = d. 
B)  b > d. 
C)  b d. 
D)  r > 0. 
E)  r > K . 
A)  b = d. 
B)  b > d. 
C)  b d. 
D)  r > 0. 
E)  r > K .

Question 14

Territoriality often results in clumped dispersion.

Accepted Answer

A) True 
 B)False

Question 15

Figure 53-5   Refer to the accompanying figure. How would the survivorship curve for elephants be represented?

Accepted Answer

A)  The curve A 
B)  The curve B 
C)  The curve C 
D)  Either A or C, depending on the species 
E)  Elephant populations would be better represented by a curve falling between A and B. 
A)  The curve A 
B)  The curve B 
C)  The curve C 
D)  Either A or C, depending on the species 
E)  Elephant populations would be better represented by a curve falling between A and B.

Question 16

Which of the following would increase population size?

Accepted Answer

A)  natality 
B)  mortality 
C)  emigration 
D)  an r less than 0 
E)  an r equal to 0 
A)  natality 
B)  mortality 
C)  emigration 
D)  an r less than 0 
E)  an r equal to 0

Question 17

A population that is divided into several local populations among which individuals occasionally disperse (emigrate and immigrate) is known as a:

Accepted Answer

A)  metapopulation. 
B)  life table. 
C)  survivorship curve. 
D)  source population. 
E)  sink population. 
A)  metapopulation. 
B)  life table. 
C)  survivorship curve. 
D)  source population. 
E)  sink population.

Question 18

Interference competition is also called contest competition.

Accepted Answer

A) True 
 B)False

Question 19

The most common spacing is random dispersion.

Accepted Answer

A) True 
 B)False

Question 20

Scramble competition results when all individuals in a population share the limited resources.

Accepted Answer

A) True 
 B)False

Exam 53: Introduction to Ecology Population Ecology

The organisms associated with patches of floating ocean vegetation would be an example of:

Less-developed countries are most likely to be characterized by:

Most insects and invertebrates are said to be iteroparous .

Figure 53-1 The equation that would best describe the curve in the accompanying figure is:

Consumption overpopulation is a problem in developing countries.

Which of the following consists of organisms, all of which share a common gene pool?

Surplus individuals in the ____ disperse and find another habitat in which to settle and reproduce.

The world human population has increased dramatically during the past few centuries due to:

The Earth's carrying capacity is:

By the end of the 21st century, it is expected that the human population will:

In a population characterized by type III survivorship, the probability of survival ____ with age.

At zero population growth:

Territoriality often results in clumped dispersion.

Figure 53-5 Refer to the accompanying figure. How would the survivorship curve for elephants be represented?

Which of the following would increase population size?

A population that is divided into several local populations among which individuals occasionally disperse (emigrate and immigrate) is known as a:

Interference competition is also called contest competition.

The most common spacing is random dispersion.

Scramble competition results when all individuals in a population share the limited resources.

A View of Life

Atoms and Molecules the Chemical Basis of Life

The Chemistry of Life Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp Energy-Releasing Pathways

Photosynthesis Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure Growth and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function an Introduction

Protection Support and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

Filters

By the end of the 21^st century, it is expected that the human population will: