Question 1

How does the environment limit population growth?

Accepted Answer

Competition, predation, limits

Question 2

During the winter of 1999, minimum temperatures did not get much below freezing in an Oregon pond, and the following summer, large mosquito populations were observed. In the winter of 2000, frost came early and most ponds were frozen for 3 months. The following summer, very small mosquito populations were observed. This is an example of

Accepted Answer

A)  community carrying capacity. 
B)  density- dependent regulation. 
C)  exotic regulation. 
D)  ecosystem carrying capacity. 
E)  density- independent regulation. 
A)  community carrying capacity. 
B)  density- dependent regulation. 
C)  exotic regulation. 
D)  ecosystem carrying capacity. 
E)  density- independent regulation.

Question 3

The maximum rate at which a population could increase is known as its .

Accepted Answer

The answer of The maximum rate at which a population...

Question 4

The prediction, during the early 1800s, that our human population would eventually reach a point where we cannot sustain ourselves has not occurred. Why?

Accepted Answer

A)  Humans continue to find ways to enhance environmental quality, thus enabling more people to be supported. 
B)  Technological advances unforeseen at that time increased the carrying capacity to a greater extent and faster than predicted. 
C)  The two world wars and the AIDS crisis caused such massive mortality that the human population has stabilized. 
D)  Dramatic reductions in fertility rates ended population growth before the crisis point was reached. 
E)  The prediction was wrong; human populations can grow indefinitely. 
A)  Humans continue to find ways to enhance environmental quality, thus enabling more people to be supported. 
B)  Technological advances unforeseen at that time increased the carrying capacity to a greater extent and faster than predicted. 
C)  The two world wars and the AIDS crisis caused such massive mortality that the human population has stabilized. 
D)  Dramatic reductions in fertility rates ended population growth before the crisis point was reached. 
E)  The prediction was wrong; human populations can grow indefinitely.

Question 5

As a developing country passes through the demographic transition, which of the following will occur?

Accepted Answer

A)  Its age structure will change, but its growth rate will remain unchanged. 
B)  First, its birth rate will decrease, followed by its death rate. 
C)  Its birth and death rates will decrease simultaneously. 
D)  Its growth rate will first fall, but later recover. 
E)  First, its death rate will decrease, followed by its birth rate. 
A)  Its age structure will change, but its growth rate will remain unchanged. 
B)  First, its birth rate will decrease, followed by its death rate. 
C)  Its birth and death rates will decrease simultaneously. 
D)  Its growth rate will first fall, but later recover. 
E)  First, its death rate will decrease, followed by its birth rate.

Question 6

A small country begins to experience stable economic prosperity after centuries of extreme poverty. The government uses the taxes generated for educating all members of the population and creating a comprehensive health care system for all of its citizens. A social security system is established to support elderly members of the population. What demographic changes would you expect to see?

Accepted Answer

A)  Large numbers of elderly people and no children 
B)  Earlier childbearing and many more children per woman, with a decrease in the number of elderly people 
C)  No changes in the population 
D)  Reproductive rates far below replacement- level fertility 
E)  A decrease in the number of deaths and an increase in the number of births and delayed childbearing 
A)  Large numbers of elderly people and no children 
B)  Earlier childbearing and many more children per woman, with a decrease in the number of elderly people 
C)  No changes in the population 
D)  Reproductive rates far below replacement- level fertility 
E)  A decrease in the number of deaths and an increase in the number of births and delayed childbearing

Question 7

A random population distribution

Accepted Answer

A)  is an advantage in avoiding predators. 
B)  is rare. 
C)  is found only in plants. 
D)  occurs when resources are evenly spaced. 
E)  allows predators to hunt more effectively. 
A)  is an advantage in avoiding predators. 
B)  is rare. 
C)  is found only in plants. 
D)  occurs when resources are evenly spaced. 
E)  allows predators to hunt more effectively.

Question 8

Environmental resistance is

Accepted Answer

A)  a factor that decreases both death rates and birth rates. 
B)  limits imposed on population growth by only the living environment (e.g., predators or competitors). 
C)  limits imposed on population growth by both the living and nonliving environments. 
D)  limits imposed on population growth by only the nonliving environment. 
E)  a factor that increases both death rates and birth rates. 
A)  a factor that decreases both death rates and birth rates. 
B)  limits imposed on population growth by only the living environment (e.g., predators or competitors). 
C)  limits imposed on population growth by both the living and nonliving environments. 
D)  limits imposed on population growth by only the nonliving environment. 
E)  a factor that increases both death rates and birth rates.

Question 9

If all the people in the world were to live at the American level in terms of technology, wealth, education, and other factors, the population of the world would have to to support them.

Accepted Answer

A)  double 
B)  reduce by half 
C)  reduce to less than a tenth of the current level 
D)  reduce to a fifth of the current level 
E)  decrease by 90% 
A)  double 
B)  reduce by half 
C)  reduce to less than a tenth of the current level 
D)  reduce to a fifth of the current level 
E)  decrease by 90%

Question 10

The population shown in the graph is demonstrating

Accepted Answer

A)  logistic population growth. 
B)  a typical boom- and- bust pattern. 
C)  clumped distribution. 
D)  an S- curve growth pattern. 
E)  exponential growth. 
A)  logistic population growth. 
B)  a typical boom- and- bust pattern. 
C)  clumped distribution. 
D)  an S- curve growth pattern. 
E)  exponential growth.

Question 11

The human population currently shows a J- curve growth pattern.

Accepted Answer

A) True 
 B)False

Question 12

Based on the data in the table, this population has a(n) growth pattern.

Accepted Answer

A)  S- curve 
B)  boom- and- bust 
C)  J- curve 
D)  exponential 
E)  scramble competition 
A)  S- curve 
B)  boom- and- bust 
C)  J- curve 
D)  exponential 
E)  scramble competition

Question 13

If most of the individuals of a species die when they are young, that species exhibits a(n) survivorship curve.

Accepted Answer

A)  S- shaped 
B)  declining 
C)  late- loss 
D)  constant- loss 
E)  early- loss 
A)  S- shaped 
B)  declining 
C)  late- loss 
D)  constant- loss 
E)  early- loss

Question 14

Predation is considered to be a density- factor that controls the size of the prey population.

Accepted Answer

The answer of Predation is considered to be a density-...

Exam 27: Population Growth and Regulation

How does the environment limit population growth?

The maximum rate at which a population could increase is known as its .

The prediction, during the early 1800s, that our human population would eventually reach a point where we cannot sustain ourselves has not occurred. Why?

As a developing country passes through the demographic transition, which of the following will occur?

A random population distribution

Environmental resistance is

If all the people in the world were to live at the American level in terms of technology, wealth, education, and other factors, the population of the world would have to to support them.

The population shown in the graph is demonstrating

The human population currently shows a J- curve growth pattern.

Based on the data in the table, this population has a(n) growth pattern.

If most of the individuals of a species die when they are young, that species exhibits a(n) survivorship curve.

Predation is considered to be a density- factor that controls the size of the prey population.

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity II: Vertebrates

Animal Behavior

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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