Question 1

Figure 53-6 ​
 
​
Refer to the accompanying figure. Assuming the pattern remains the same, what will the population experience in 50 years?

Accepted Answer

A)  Slow growth 
B)  Rapid growth 
C)  Steady state growth 
D)  Negative growth 
E)  No prediction can be made using these data 
A)  Slow growth 
B)  Rapid growth 
C)  Steady state growth 
D)  Negative growth 
E)  No prediction can be made using these data D

Question 2

Members of an r-selected species typically have a short lifespan.

Accepted Answer

A) True 
 B)False  True

Question 3

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. C

Question 4

Density-independent factors:

Accepted Answer

A)  influence population size and are in turn influenced by changes in population density. 
B)  may be the result of intense interspecific competition. 
C)  are typically abiotic. 
D)  may include parasites. 
E)  may include diseases. 
A)  influence population size and are in turn influenced by changes in population density. 
B)  may be the result of intense interspecific competition. 
C)  are typically abiotic. 
D)  may include parasites. 
E)  may include diseases.

Question 5

What would be the growth rate ( r ) of an island population of 1,000 that has 30 births per 100 population, 20 death per 100 population, 5 immigrants per 100 population, and 10 emigrants per 100 population?

Accepted Answer

A)  +5 
B)  − 50 
C)  +50 
D)  − 150 
E)  +150 
A)  +5 
B)  − 50 
C)  +50 
D)  − 150 
E)  +150

Question 6

Match between columns
                        Premises: Disease

Accepted Answer

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

Question 7

What term refers to the average rate at which organisms produce offspring?

Accepted Answer

A)  Doubling time 
B)  Natality 
C)  Emigration 
D)  Stasis 
E)  Survivorship 
A)  Doubling time 
B)  Natality 
C)  Emigration 
D)  Stasis 
E)  Survivorship

Question 8

Which of the following organisms would have the highest intrinsic rate of increase?

Accepted Answer

A)  Bacteria 
B)  Blue whales 
C)  Red grouse 
D)  Elephants 
E)  Humans 
A)  Bacteria 
B)  Blue whales 
C)  Red grouse 
D)  Elephants 
E)  Humans

Question 9

When r = −0.00057, the population size:

Accepted Answer

A)  will increase. 
B)  will decrease. 
C)  is stable. 
D)  may increase or decrease, depending on K . 
E)  may increase or decrease, depending on i . 
A)  will increase. 
B)  will decrease. 
C)  is stable. 
D)  may increase or decrease, depending on K . 
E)  may increase or decrease, depending on i .

Question 10

The average number of children born to a woman during her lifetime is known as:

Accepted Answer

A)  age structure. 
B)  replacement-level fertility. 
C)  natality. 
D)  total fertility rate. 
E)  infant mortality rate. 
A)  age structure. 
B)  replacement-level fertility. 
C)  natality. 
D)  total fertility rate. 
E)  infant mortality rate.

Question 11

Figure 53-4 ​
 
​
Which of the following species exhibits a mix of more than one type of survivorship over their life cycle?

Accepted Answer

A)  Humans 
B)  Bison 
C)  Drummond flox 
D)  Oysters 
E)  Herring gulls 
A)  Humans 
B)  Bison 
C)  Drummond flox 
D)  Oysters 
E)  Herring gulls

Question 12

A human population that is shrinking would be characterized by a(n):

Accepted Answer

A)  large proportion of prereproductive individuals. 
B)  small proportion of prereproductive individuals. 
C)  large proportion of reproductive individuals. 
D)  equal number of individuals of all age groups. 
E)  small proportion of postreproductive individuals. 
A)  large proportion of prereproductive individuals. 
B)  small proportion of prereproductive individuals. 
C)  large proportion of reproductive individuals. 
D)  equal number of individuals of all age groups. 
E)  small proportion of postreproductive individuals.

Question 13

Figure 53-3 ​
 
​
Based on the accompanying figure, the decline in the moose population in 1996 was most likely due to a(n):

Accepted Answer

A)  predictable increase in the wolf population. 
B)  unpredictable increase in the wolf population. 
C)  decrease in the intrinsic rate of increase for the moose population. 
D)  decline in the food supply. 
E)  unknown disease organism. 
A)  predictable increase in the wolf population. 
B)  unpredictable increase in the wolf population. 
C)  decrease in the intrinsic rate of increase for the moose population. 
D)  decline in the food supply. 
E)  unknown disease organism.

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

Match between columns
                        Premises: Dominant individuals obtain limited resources at the expense of others

Accepted Answer

The Answer of Exploitation competition and Interference competition is...

Question 16

Which of the following is a correct statement regarding populations in biology?

Accepted Answer

A)  A population is a group consisting of more than one species that all live together in a prescribed area at the same time 
B)  The boundaries of the area cannot be defined by an ecologist. 
C)  Populations exhibit characteristics distinctive from those of the individuals of which they are composed. 
D)  Populations have the same properties as communities. 
E)  Natural selection acts indirectly to produce adaptive changes in populations and directly affects the community level. 
A)  A population is a group consisting of more than one species that all live together in a prescribed area at the same time 
B)  The boundaries of the area cannot be defined by an ecologist. 
C)  Populations exhibit characteristics distinctive from those of the individuals of which they are composed. 
D)  Populations have the same properties as communities. 
E)  Natural selection acts indirectly to produce adaptive changes in populations and directly affects the community level.

Question 17

In a human population with a high proportion of prereproductive individuals, the population will:

Accepted Answer

A)  continue to increase even if the fertility rate is at replacement levels. 
B)  decline even if the fertility rate is at replacement levels. 
C)  increase only if the fertility rate is above replacement levels. 
D)  decline only if the replacement level fertility rate changes. 
E)  reach ZPG sooner than with a low proportion of prereproductive individuals. 
A)  continue to increase even if the fertility rate is at replacement levels. 
B)  decline even if the fertility rate is at replacement levels. 
C)  increase only if the fertility rate is above replacement levels. 
D)  decline only if the replacement level fertility rate changes. 
E)  reach ZPG sooner than with a low proportion of prereproductive individuals.

Question 18

Which of the following relationships is incorrectly paired?

Accepted Answer

A)  Schooling fish-aggregated distribution 
B)  Nesting seabirds-random dispersion 
C)  Grove of aspen-clumped dispersion 
D)  Flour beetle larvae-random dispersion 
E)  Adult sand pine-uniform dispersion 
A)  Schooling fish-aggregated distribution 
B)  Nesting seabirds-random dispersion 
C)  Grove of aspen-clumped dispersion 
D)  Flour beetle larvae-random dispersion 
E)  Adult sand pine-uniform dispersion

Question 19

Which of the following is NOT a condition that is likely to lead to clumped population dispersion?

Accepted Answer

A)  Severe competition among individuals 
B)  Patchy distribution of resources in the environment 
C)  Presence of family groups and pairs 
D)  Limited seed dispersal or asexual reproduction 
E)  Pressure from predation 
A)  Severe competition among individuals 
B)  Patchy distribution of resources in the environment 
C)  Presence of family groups and pairs 
D)  Limited seed dispersal or asexual reproduction 
E)  Pressure from predation

Question 20

The potential capacity to produce offspring is called:

Accepted Answer

A)  life history traits. 
B)  fitness. 
C)  age structure. 
D)  density. 
E)  fecundity. 
A)  life history traits. 
B)  fitness. 
C)  age structure. 
D)  density. 
E)  fecundity.

Exam 53: Introduction to Ecology: Population Ecology

Figure 53-6 ​ ​ Refer to the accompanying figure. Assuming the pattern remains the same, what will the population experience in 50 years?

Members of an r-selected species typically have a short lifespan.

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

Density-independent factors:

What would be the growth rate ( r ) of an island population of 1,000 that has 30 births per 100 population, 20 death per 100 population, 5 immigrants per 100 population, and 10 emigrants per 100 population?

What term refers to the average rate at which organisms produce offspring?

Which of the following organisms would have the highest intrinsic rate of increase?

When r = −0.00057, the population size:

The average number of children born to a woman during her lifetime is known as:

Figure 53-4 ​ ​ Which of the following species exhibits a mix of more than one type of survivorship over their life cycle?

A human population that is shrinking would be characterized by a(n):

Figure 53-3 ​ ​ Based on the accompanying figure, the decline in the moose population in 1996 was most likely due to a(n):

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

Which of the following is a correct statement regarding populations in biology?

In a human population with a high proportion of prereproductive individuals, the population will:

Which of the following relationships is incorrectly paired?

Which of the following is NOT a condition that is likely to lead to clumped population dispersion?

The potential capacity to produce offspring is called:

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

Figure 53-6 Refer to the accompanying figure. Assuming the pattern remains the same, what will the population experience in 50 years?

Figure 53-4 Which of the following species exhibits a mix of more than one type of survivorship over their life cycle?

Figure 53-3 Based on the accompanying figure, the decline in the moose population in 1996 was most likely due to a(n):