Question 1

Even if a beneficial heritable trait is present in a population,the population's ability to adapt may be limited by its ____________________.

Accepted Answer

reproducti...

Question 2

Fossils tell us about the long history of life on the earth and so far,our fossil record probably represents ____ of all species that have ever lived.

Accepted Answer

A)   1%
B)   5%
C)   20%
D)   50%
E)   75%

Question 3

Research performed by Edward O.Wilson on ____ has been applied to the study and understanding of other social organisms,including humans.

Accepted Answer

A)   ants
B)   worms
C)   bees
D)   chimpanzees
E)   elephants

Question 4

Which of the following would be the least likely cause for the decline of amphibians?

Accepted Answer

A)   habitat destruction
B)   prolonged rainy periods
C)   pollution
D)   increases in UV radiation
E)   parasites

Question 5

The loss of a(n) ____ can lead to population crashes and extinctions of other species in a community that depends on them for certain ecosystem services.

Accepted Answer

A)   foundation species
B)   indicator species
C)   native species
D)   keystone species
E)   specialist species

Question 6

Estimates indicate the average annual background extinction rate is one species lost for each million species on earth per year.

Accepted Answer

A) True 
 B)False

Question 7

What term describes the number of different species in a given area?

Accepted Answer

A)   speciation
B)   species evenness
C)   species niche
D)   species richness
E)   habitat

Question 8

One contributing factor of the declines in many frog species is that frog eggs have ____.

Accepted Answer

A)   shells that prevent frog embryos from hatching easily
B)   shells that are permeable to water pollutants
C)   no shells to protect from embryos from predation
D)   no shells to protect frog embryos from dehydration
E)   no shells to protect frog embryos from water pollutants

Question 9

Scientists are now able to produce desirable traits in some organisms by adding,deleting,or changing segments of its DNA.This process is known as ____.

Accepted Answer

A)   genetic modification
B)   genetic engineering
C)   genetic drift
D)   mutation
E)   speciation

Question 10

Before conservation efforts facilitated their comeback,the American alligator population was nearly completely wiped out primarily because of ____.

Accepted Answer

A)   parasites
B)   diseases
C)   hunters
D)   land developers
E)   pollution

Question 11

Non-native species can spread rapidly if they find a new location with favorable conditions,often because they do not face the same ____ that they face in their native niches.

Accepted Answer

A)   temperatures
B)   precipitation ranges
C)   pollinators
D)   predators
E)   soil nutrients

Question 12

Use the figure above to answer the following question(s).
-What does the height of each of the curves on the graph represent?

Accepted Answer

The height represent...

Question 13

The fact that tectonic plates drift influences evolution by ____.

Accepted Answer

A)   increasing the level of carbon dioxide
B)   changing the earth's climate
C)   changing the spin of the earth
D)   decreasing soil nutrient richness
E)   changing magnetic fields and disrupts migration patterns

Question 14

Use the figure above to answer the following question(s).
-Which of the two species on the graph is more prone to extinction and why?

Accepted Answer

The panda is more prone to ext...

Question 15

The scientific study of insects is called ____.

Accepted Answer

A)   limnology
B)   ornithology
C)   ichthyology
D)   entomology
E)   herpetology

Question 16

Compounds found in the ____ of certain amphibians have been isolated and used in pharmaceutical products.

Accepted Answer

A)   skin secretions
B)   gut contents
C)   fatty tissue
D)   brain matter
E)   saliva

Question 17

According to the International Union for Conservation of Nature,more than ____ percent of all known amphibian species are declining in numbers.

Accepted Answer

The answer of According to the International Union for Conservation...

Question 18

What are amphibians?

Accepted Answer

A)   invertebrates that live part of their lives in water and part on land
B)   invertebrates that live on land,near water
C)   vertebrates with secretory skin glands that makes them slimy
D)   vertebrates that live part of their lives in water and part on land
E)   vertebrates that live on land,near water

Question 19

The diversity that enables life on the earth to adapt and survive environmental changes is called ____.

Accepted Answer

A)   functional diversity
B)   genetic diversity
C)   cognitive diversity
D)   ecosystem diversity
E)   species diversity

Question 20

Biological evolution by natural selection is when genes ____,individuals ____,and populations ____.

Accepted Answer

A)   evolve;mutate;are selected
B)   are selected;mutate;evolve
C)   mutate;evolve;are selected
D)   evolve;are selected;mutate
E)   mutate;are selected;evolve

Exam 4: Biodiversity and Evolution

Biological evolution by natural selection is when genes ____,individuals ____,and populations ____.

Correct AnswerverifiedShow Answer

Use the figure above to answer the following question(s). -What does the height of each of the curves on the graph represent?

Correct AnswerverifiedThe height represent...View AnswerShow Answer

Use the figure above to answer the following question(s). -Which of the two species on the graph is more prone to extinction and why?

Correct AnswerverifiedThe panda is more prone to ext...View AnswerShow Answer

Before conservation efforts facilitated their comeback,the American alligator population was nearly completely wiped out primarily because of ____.

Correct AnswerverifiedShow Answer

Scientists are now able to produce desirable traits in some organisms by adding,deleting,or changing segments of its DNA.This process is known as ____.

Correct AnswerverifiedShow Answer

Which of the following would be the least likely cause for the decline of amphibians?

Correct AnswerverifiedShow Answer

What are amphibians?

Correct AnswerverifiedShow Answer

Non-native species can spread rapidly if they find a new location with favorable conditions,often because they do not face the same ____ that they face in their native niches.

Correct AnswerverifiedShow Answer

The diversity that enables life on the earth to adapt and survive environmental changes is called ____.

Correct AnswerverifiedShow Answer

One contributing factor of the declines in many frog species is that frog eggs have ____.

Correct AnswerverifiedShow Answer

Estimates indicate the average annual background extinction rate is one species lost for each million species on earth per year.

Correct AnswerverifiedShow Answer

The fact that tectonic plates drift influences evolution by ____.

Correct AnswerverifiedShow Answer

What term describes the number of different species in a given area?

Correct AnswerverifiedShow Answer

Research performed by Edward O.Wilson on ____ has been applied to the study and understanding of other social organisms,including humans.

Correct AnswerverifiedShow Answer

Even if a beneficial heritable trait is present in a population,the population's ability to adapt may be limited by its ____________________.

Correct Answerverifiedreproducti...View AnswerShow Answer

The loss of a(n) ____ can lead to population crashes and extinctions of other species in a community that depends on them for certain ecosystem services.

Correct AnswerverifiedShow Answer

Compounds found in the ____ of certain amphibians have been isolated and used in pharmaceutical products.

Correct AnswerverifiedShow Answer

Fossils tell us about the long history of life on the earth and so far,our fossil record probably represents ____ of all species that have ever lived.

Correct AnswerverifiedShow Answer

According to the International Union for Conservation of Nature,more than ____ percent of all known amphibian species are declining in numbers.

Correct AnswerverifiedShow Answer

The scientific study of insects is called ____.

Correct AnswerverifiedShow Answer

Biological evolution by natural selection is when genes ,individuals ,and populations .

Correct Answer
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The height represent...
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The panda is more prone to ext...
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reproducti...
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