Question 1

The American alligator is a(n) ____ because it plays a number of important roles in the ecosystems where it is found in the southeastern United States.

Accepted Answer

A)  endemic species 
B)  specialist species 
C)  indicator species 
D)  exotic species 
E)  keystone species 
A)  endemic species 
B)  specialist species 
C)  indicator species 
D)  exotic species 
E)  keystone species E

Question 2

A common misconception about evolution is that humans evolved from ___, when they actually evolved from _____.

Accepted Answer

A)  apes or monkeys; a common ancestor shared with apes and moneys 
B)  a common ancestor shared with apes and monkeys; monkeys or chimpanzees; 
C)  chimpanzees; apes 
D)  a common ancestor shared with apes and monkeys; apes, monkeys, or chimpanzees 
E)  an ancestor with no connection to apes or monkeys; apes and monkeys 
A)  apes or monkeys; a common ancestor shared with apes and moneys 
B)  a common ancestor shared with apes and monkeys; monkeys or chimpanzees; 
C)  chimpanzees; apes 
D)  a common ancestor shared with apes and monkeys; apes, monkeys, or chimpanzees 
E)  an ancestor with no connection to apes or monkeys; apes and monkeys A

Question 3

Fossils are often found in ____.

Accepted Answer

A)  limestone, sandstone, and other sedimentary rocks 
B)  igneous rock and magma from volcanic eruptions 
C)  topsoil with considerable organic matter 
D)  sand, silt, and clay 
E)  metamorphic rock 
A)  limestone, sandstone, and other sedimentary rocks 
B)  igneous rock and magma from volcanic eruptions 
C)  topsoil with considerable organic matter 
D)  sand, silt, and clay 
E)  metamorphic rock A

Question 4

Most of the earth's species of flowering plants depend on insects to pollinate their flowers.

Accepted Answer

A) True 
 B)False

Question 5

Biomes are ____.

Accepted Answer

A)  individual ocean basins 
B)  large terrestrial regions of the earth with distinct climate and certain species typically occurring within them 
C)  groups of populations living in harmony in a given ecosystem 
D)  all the biological, rather than human-made, portions of the planet combined into one ecosystem 
E)  types of forests that are extensive and widespread on a continent 
A)  individual ocean basins 
B)  large terrestrial regions of the earth with distinct climate and certain species typically occurring within them 
C)  groups of populations living in harmony in a given ecosystem 
D)  all the biological, rather than human-made, portions of the planet combined into one ecosystem 
E)  types of forests that are extensive and widespread on a continent

Question 6

What is the difference between species diversity and genetic diversity?

Accepted Answer

Species diversity refers to th

Question 7

We can say that on a long-term basis, ____ has especially helped life on the earth to adapt to drastic changes in environmental conditions.

Accepted Answer

A)  wise use 
B)  energy cycling 
C)  nutrient cycling 
D)  energy 
E)  genetic biodiversity 
A)  wise use 
B)  energy cycling 
C)  nutrient cycling 
D)  energy 
E)  genetic biodiversity

Question 8

Specialist species occupy ____.

Accepted Answer

A)  multiple habitats 
B)  a broad ecological niche 
C)  multiple ecological niches 
D)  a narrow ecological niche 
E)  the same niche as a keystone species 
A)  multiple habitats 
B)  a broad ecological niche 
C)  multiple ecological niches 
D)  a narrow ecological niche 
E)  the same niche as a keystone species

Question 9

Which statement is true with regard to mutations?

Accepted Answer

A)  Mutations are always harmful. 
B)  Mutations always provide for beneficial changes in an organism's genetic makeup. 
C)  Mutations are chosen by the organism to improve their survival. 
D)  Mutations that survive in a population are determined by natural selection. 
E)  Mutations are caused only by harmful chemicals. 
A)  Mutations are always harmful. 
B)  Mutations always provide for beneficial changes in an organism's genetic makeup. 
C)  Mutations are chosen by the organism to improve their survival. 
D)  Mutations that survive in a population are determined by natural selection. 
E)  Mutations are caused only by harmful chemicals.

Question 10

Desert, prairie grassland, and coniferous forest with distinct climates and certain species are all examples of ____________________.

Accepted Answer

The answer of Desert, prairie grassland, and coniferous forest with...

Question 11

Scientists use ____ to alter an organism's genetic material by adding, deleting, or changing segments of its DNA to produce desirable traits or to eliminate undesirable ones.

Accepted Answer

A)  genetic engineering 
B)  natural selection 
C)  geographic isolation 
D)  speciation 
E)  genetic resistance 
A)  genetic engineering 
B)  natural selection 
C)  geographic isolation 
D)  speciation 
E)  genetic resistance

Question 12

A ____________________ is a significant rise in extinction rates above the background level.

Accepted Answer

The answer of A ____________________ is a significant rise in...

Question 13

____________________ are changes in DNA that can be inherited by offspring.

Accepted Answer

The answer of ____________________ are changes in DNA that can...

Question 14

Amphibian populations are declining due to multiple threats, but are not threatened by overhunting.

Accepted Answer

A) True 
 B)False

Question 15

The ability of one or more organisms in a population to tolerate a chemical such as a pesticide or antibiotic designed to kill it and to reproduce more rapidly than the members of the population that do not have such genetic traits is called ____.

Accepted Answer

A)  synthetic biology 
B)  genetic engineering 
C)  crossbreeding 
D)  genetic resistance 
E)  heritability 
A)  synthetic biology 
B)  genetic engineering 
C)  crossbreeding 
D)  genetic resistance 
E)  heritability

Question 16

When bacteria are exposed to antibiotic medications, they can develop resistance so that the drugs no longer harm them. For this to occur, the bacteria must experience ____ followed by _____.

Accepted Answer

A)  adaptation; bacterial mortality 
B)  a beneficial mutation; natural selection 
C)  a harmful mutation; invasion 
D)  adaptation; a harmful mutation 
E)  invasion; evolution 
A)  adaptation; bacterial mortality 
B)  a beneficial mutation; natural selection 
C)  a harmful mutation; invasion 
D)  adaptation; a harmful mutation 
E)  invasion; evolution

Question 17

Which statement best describes an organism's habitat?

Accepted Answer

A)  Nutrient relationships with other species 
B)  Place or type of ecosystem in which a species lives 
C)  Types of resource requirements 
D)  Range of tolerance to different physical and chemical conditions 
E)  Types of competitors 
A)  Nutrient relationships with other species 
B)  Place or type of ecosystem in which a species lives 
C)  Types of resource requirements 
D)  Range of tolerance to different physical and chemical conditions 
E)  Types of competitors

Question 18

Amphibians are very sensitive to chemicals in their environment and often show effects of harmful chemicals before other species do. This makes them useful as a(n) ____.

Accepted Answer

A)  invasive species 
B)  exotic species 
C)  keystone species 
D)  indicator species 
E)  native species 
A)  invasive species 
B)  exotic species 
C)  keystone species 
D)  indicator species 
E)  native species

Question 19

The role a species plays in its ecosystem is its ____.

Accepted Answer

A)  biodiversity 
B)  biome 
C)  habitat 
D)  niche 
E)  trait 
A)  biodiversity 
B)  biome 
C)  habitat 
D)  niche 
E)  trait

Question 20

What are some reasons that alligators are considered to be keystone species?

Accepted Answer

They provide many important benefits for

The American alligator is a(n) ____ because it plays a number of important roles in the ecosystems where it is found in the southeastern United States.

A common misconception about evolution is that humans evolved from _, when they actually evolved from ___.

Fossils are often found in ____.

Most of the earth's species of flowering plants depend on insects to pollinate their flowers.

Biomes are ____.

What is the difference between species diversity and genetic diversity?

We can say that on a long-term basis, ____ has especially helped life on the earth to adapt to drastic changes in environmental conditions.

Specialist species occupy ____.

Which statement is true with regard to mutations?

Desert, prairie grassland, and coniferous forest with distinct climates and certain species are all examples of ____________________.

Scientists use ____ to alter an organism's genetic material by adding, deleting, or changing segments of its DNA to produce desirable traits or to eliminate undesirable ones.

A ____________________ is a significant rise in extinction rates above the background level.

____________________ are changes in DNA that can be inherited by offspring.

Amphibian populations are declining due to multiple threats, but are not threatened by overhunting.

The ability of one or more organisms in a population to tolerate a chemical such as a pesticide or antibiotic designed to kill it and to reproduce more rapidly than the members of the population that do not have such genetic traits is called ____.

When bacteria are exposed to antibiotic medications, they can develop resistance so that the drugs no longer harm them. For this to occur, the bacteria must experience followed by _.

Which statement best describes an organism's habitat?

Amphibians are very sensitive to chemicals in their environment and often show effects of harmful chemicals before other species do. This makes them useful as a(n) ____.

The role a species plays in its ecosystem is its ____.

What are some reasons that alligators are considered to be keystone species?

The Environment and Sustainability

Science, Matter, Energy and Systems

Ecosystems: What Are They and How Do They Work

Species Interactions, Ecological Succession and Population Control

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity: Saving Species

Sustaining Biodiversity: Saving Ecosystems

Food Production and the Environment

Water Resources and Water Pollution

Geology and Nonrenewable Mineral Resources

Energy Resources

Environmental Hazards and Human Health

Air Pollution, Climate Change and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics, Politics and Worldviews

Filters

Exam 4: Biodiversity and Evolution

The American alligator is a(n) ____ because it plays a number of important roles in the ecosystems where it is found in the southeastern United States.

A common misconception about evolution is that humans evolved from ___, when they actually evolved from _____.

Fossils are often found in ____.

Most of the earth's species of flowering plants depend on insects to pollinate their flowers.

Biomes are ____.

What is the difference between species diversity and genetic diversity?

We can say that on a long-term basis, ____ has especially helped life on the earth to adapt to drastic changes in environmental conditions.

Specialist species occupy ____.

Which statement is true with regard to mutations?

Desert, prairie grassland, and coniferous forest with distinct climates and certain species are all examples of ____________________.

Scientists use ____ to alter an organism's genetic material by adding, deleting, or changing segments of its DNA to produce desirable traits or to eliminate undesirable ones.

A ____________________ is a significant rise in extinction rates above the background level.

____________________ are changes in DNA that can be inherited by offspring.

Amphibian populations are declining due to multiple threats, but are not threatened by overhunting.

The ability of one or more organisms in a population to tolerate a chemical such as a pesticide or antibiotic designed to kill it and to reproduce more rapidly than the members of the population that do not have such genetic traits is called ____.

When bacteria are exposed to antibiotic medications, they can develop resistance so that the drugs no longer harm them. For this to occur, the bacteria must experience ____ followed by _____.

Which statement best describes an organism's habitat?

Amphibians are very sensitive to chemicals in their environment and often show effects of harmful chemicals before other species do. This makes them useful as a(n) ____.

The role a species plays in its ecosystem is its ____.

What are some reasons that alligators are considered to be keystone species?

The Environment and Sustainability

Science, Matter, Energy and Systems

Ecosystems: What Are They and How Do They Work

Species Interactions, Ecological Succession and Population Control

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity: Saving Species

Sustaining Biodiversity: Saving Ecosystems

Food Production and the Environment

Water Resources and Water Pollution

Geology and Nonrenewable Mineral Resources

Energy Resources

Environmental Hazards and Human Health

Air Pollution, Climate Change and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics, Politics and Worldviews

Filters

A common misconception about evolution is that humans evolved from _, when they actually evolved from ___.

When bacteria are exposed to antibiotic medications, they can develop resistance so that the drugs no longer harm them. For this to occur, the bacteria must experience followed by _.