Question 1

The greatest natural threat to newly hatched sea turtles is

Accepted Answer

A)  ecotourism. 
B)  beach development. 
C)  predation by native species. 
D)  polluted ocean waters. 
E)  drowning. 
A)  ecotourism. 
B)  beach development. 
C)  predation by native species. 
D)  polluted ocean waters. 
E)  drowning.

Question 2

Why is it important to preserve the genes of the wild relatives of crop plants?

Accepted Answer

A)  It is not important because the wild species have all become extinct. 
B)  The wild relatives are the food sources for all domestic animal species. 
C)  Beneficial genes from the wild relatives may be transferred into crop plants. 
D)  It is not important because the human population no longer eats wild foods. 
E)  By preserving the genes, we can control the growth of the wild relatives, which threaten our crop plants. 
A)  It is not important because the wild species have all become extinct. 
B)  The wild relatives are the food sources for all domestic animal species. 
C)  Beneficial genes from the wild relatives may be transferred into crop plants. 
D)  It is not important because the human population no longer eats wild foods. 
E)  By preserving the genes, we can control the growth of the wild relatives, which threaten our crop plants.

Question 3

Invasive species cannot be introduced to the Great Lakes because they are isolated from the oceans.

Accepted Answer

A) True 
 B)False

Question 4

Attempts are being made to restore the Kissimmee River, located in Floridaʹs Heartland. What ecological benefit could be derived from this restoration?

Accepted Answer

A)  Improving the water quality and restoring biodiversity 
B)  Reducing ecotourism 
C)  Expanding development 
D)  Using more land for agriculture 
E)  Decreasing biodiversity 
A)  Improving the water quality and restoring biodiversity 
B)  Reducing ecotourism 
C)  Expanding development 
D)  Using more land for agriculture 
E)  Decreasing biodiversity

Question 5

Tropical rain forests provide all of the following EXCEPT

Accepted Answer

A)  traditional medicines. 
B)  ecotourism. 
C)  hardwoods for consumers worldwide. 
D)  large supplies of gasoline. 
E)  wood used for cooking by local residents. 
A)  traditional medicines. 
B)  ecotourism. 
C)  hardwoods for consumers worldwide. 
D)  large supplies of gasoline. 
E)  wood used for cooking by local residents.

Question 6

Natural areas that are protected from human development are called _________.

Accepted Answer

The answer of Natural areas that are protected from human...

Question 7

-According to the graph, the human population?s biological footprint in 2000 was estimated at

Accepted Answer

A)  0.8 Earth. 
B)  0.5 Earth. 
C)  0.6 Earth. 
D)  1.2 Earths. 
E)  1 Earth. 
A)  0.8 Earth. 
B)  0.5 Earth. 
C)  0.6 Earth. 
D)  1.2 Earths. 
E)  1 Earth.

Question 8

An introduced species is ʺinvasiveʺ if it

Accepted Answer

A)  is a threat to humans. 
B)  does not cause significant harm to native species. 
C)  survives in its new habitat and forms mutually beneficial relationships with native species. 
D)  cannot successfully maintain a population in the new habitat. 
E)  outcompetes native species in its new habitat. 
A)  is a threat to humans. 
B)  does not cause significant harm to native species. 
C)  survives in its new habitat and forms mutually beneficial relationships with native species. 
D)  cannot successfully maintain a population in the new habitat. 
E)  outcompetes native species in its new habitat.

Question 9

Plant roots increase the soilʹs capacity to hold water, so vegetation contributes to erosion and flood control.

Accepted Answer

A) True 
 B)False

Question 10

Plants help reduce flooding by

Accepted Answer

A)  breaking down the soil. 
B)  increasing CO2 levels. 
C)  increasing the soilʹs ability to hold water. 
D)  decreasing the amount of water returned to the air. 
E)  removing soil. 
A)  breaking down the soil. 
B)  increasing CO2 levels. 
C)  increasing the soilʹs ability to hold water. 
D)  decreasing the amount of water returned to the air. 
E)  removing soil.

Question 11

The_________ is a keystone predator in the ocean.

Accepted Answer

The answer of The_________ is a keystone predator in the...

Question 12

Core reserves are areas where

Accepted Answer

A)  only human activities that have low impact on the native wildlife are allowed. 
B)  humans are allowed to use and develop the areas as they see fit. 
C)  humans are forbidden from entering. 
D)  humans have irrevocably destroyed the local ecosystem. 
E)  wildlife species benefit from extensive conservation programs, including nurseries and clinics. 
A)  only human activities that have low impact on the native wildlife are allowed. 
B)  humans are allowed to use and develop the areas as they see fit. 
C)  humans are forbidden from entering. 
D)  humans have irrevocably destroyed the local ecosystem. 
E)  wildlife species benefit from extensive conservation programs, including nurseries and clinics.

Question 13

In the soil,_________ convert atmospheric nitrogen into a form that plants can use.

Accepted Answer

A)  bacteria 
B)  insects 
C)  fungi 
D)  worms 
E)  plants 
A)  bacteria 
B)  insects 
C)  fungi 
D)  worms 
E)  plants

Question 14

The idea that several species in a community have functionally equivalent roles but vary in their ability to withstand environmental stressors is called the _________hypothesis.

Accepted Answer

A)  biocapacity 
B)  unextinction 
C)  redundancy 
D)  rivet 
E)  multiple species 
A)  biocapacity 
B)  unextinction 
C)  redundancy 
D)  rivet 
E)  multiple species

Question 15

_________occurs when human developments break up natural ecosystems into smaller areas.

Accepted Answer

A)  Overexploitation 
B)  Sustainable development 
C)  Conservation biology 
D)  Habitat fragmentation 
E)  Species invasion 
A)  Overexploitation 
B)  Sustainable development 
C)  Conservation biology 
D)  Habitat fragmentation 
E)  Species invasion

Question 16

The _________of the planet is the area of Earth?s surface that is actually available to generate resources and process wastes.

Accepted Answer

The answer of The _________of the planet is the area...

Question 17

It is difficult to estimate current rates of extinction, but we know that extinction rates have risen dramatically in recent years because

Accepted Answer

A)  most species in danger of extinction are microscopic. 
B)  background extinction rates have increased. 
C)  the fossil record is unreliable. 
D)  current rates of extinction are much higher than that of background rates. 
E)  new species are evolving as fast as species are becoming extinct. 
A)  most species in danger of extinction are microscopic. 
B)  background extinction rates have increased. 
C)  the fossil record is unreliable. 
D)  current rates of extinction are much higher than that of background rates. 
E)  new species are evolving as fast as species are becoming extinct.

Question 18

Food that is produced using unsustainable farming practices tends to

Accepted Answer

A)  be cheaper. 
B)  have more complex carbohydrates. 
C)  have a lower fat content. 
D)  have a longer shelf life. 
E)  be less susceptible to pest damage. 
A)  be cheaper. 
B)  have more complex carbohydrates. 
C)  have a lower fat content. 
D)  have a longer shelf life. 
E)  be less susceptible to pest damage.

Question 19

Global climate change will cause deserts to become hotter and wetter.

Accepted Answer

A) True 
 B)False

Question 20

In the wild, plants depend on bacteria in the soil to provide nitrogen.

Accepted Answer

A) True 
 B)False

Exam 31: Conserving Earths Biodiversity

The greatest natural threat to newly hatched sea turtles is

Why is it important to preserve the genes of the wild relatives of crop plants?

Invasive species cannot be introduced to the Great Lakes because they are isolated from the oceans.

Attempts are being made to restore the Kissimmee River, located in Floridaʹs Heartland. What ecological benefit could be derived from this restoration?

Tropical rain forests provide all of the following EXCEPT

Natural areas that are protected from human development are called _________.

-According to the graph, the human population?s biological footprint in 2000 was estimated at

An introduced species is ʺinvasiveʺ if it

Plant roots increase the soilʹs capacity to hold water, so vegetation contributes to erosion and flood control.

Plants help reduce flooding by

The_________ is a keystone predator in the ocean.

Core reserves are areas where

In the soil,_________ convert atmospheric nitrogen into a form that plants can use.

The idea that several species in a community have functionally equivalent roles but vary in their ability to withstand environmental stressors is called the _________hypothesis.

_________occurs when human developments break up natural ecosystems into smaller areas.

The _________of the planet is the area of Earth?s surface that is actually available to generate resources and process wastes.

It is difficult to estimate current rates of extinction, but we know that extinction rates have risen dramatically in recent years because

Food that is produced using unsustainable farming practices tends to

Global climate change will cause deserts to become hotter and wetter.

In the wild, plants depend on bacteria in the soil to provide nitrogen.

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

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

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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