Question 1

Most of the species that are yet undiscovered are probably

Accepted Answer

A)   mammals and reptiles.
B)   birds and fish.
C)   fungi.
D)   invertebrates.
E)   multicellular plants.

Question 2

Ecological diversity is a measure of the number of

Accepted Answer

A)   different kinds of organisms within a community or ecosystem.
B)   different versions of the same gene in an ecological community.
C)  sizes, colors, and shapes of organisms within an ecological community.
D)  niches, trophic levels, and ecological processes of a biological community.
E)  different species in an ecosystem.

Question 3

Estuaries contain a mix of fresh and salt water.

Accepted Answer

A) True 
 B)False

Question 4

Species diversity is most concentrated in

Accepted Answer

A)   North America and Europe.
B)   South America, Africa, and Southeast Asia.
C)   South Africa, Australia, and Europe.
D)   Oceania, East Asia, and Antarctica.
E)   North America, South America, and Africa B

Question 5

The main reason that there are relatively few invertebrates categorized as endangered species is because

Accepted Answer

A)   we consider other groups, such as mammals, to be more interesting and desirable.
B)   worldwide there are relatively few invertebrates when compared to plants.
C)   it is extremely difficult to identify and count invertebrates.
D)   Since there are 532 invertebrates considered endangered, none of these are True.
E)   invertebrates are more numerous and the relative percentages are similar.

Question 6

We are usually referring to species diversity when we talk about biodiversity. However, genetic diversity is also important to ecological systems because diverse genes

Accepted Answer

A)   increase the efficiency and productivity of a system because all niches are filled.
B)   allow an individual organism to adapt to its changing environment.
C)   are necessary for a population to evolve in a changing environment.
D)   lead to diverse ecological processes in a biological community.
E)   are important for a balanced ecosystem.

Question 7

Ecological diversity is a measure of the number of

Accepted Answer

A)   different kinds of organisms within a community or ecosystem.
B)   different versions of the same gene in an ecological community.
C)   sizes, colors, and shapes of organisms within an ecological community.
D)   niches, trophic levels, and ecological processes of a biological community.
E)   different species in an ecosystem.

Question 8

The total number of living species is probably

Accepted Answer

A)   about 450,000.
B)   between 500,000 and 1 million.
C)   between 3 million and 50 million.
D)   between 75 and 95 million.
E)   at least 300 million.

Question 9

Which of the following is True?

Accepted Answer

A)   Humans may have been causing extinctions thousands of years ago, but our impact has recently increased.
B)   Humans are responsible for many of the mass extinctions in the geologic record.
C)   Humans only began causing extinctions in the past 150 years.
D)   Humans have never had significant impact on species extinctions until the past four decades.
E)   Humans have been causing extinctions for thousands of years and we are still causing extinctions at about the same rate.

Question 10

The objective of a species recovery plan is to

Accepted Answer

A)   interbreed threatened species with common species.
B)   increase an endangered species population until it is no longer endangered.
C)   invest corporate capital in species maintenance.
D)   study the species for a better understanding of its role in the biological community.
E)   protect the species to aid other organisms and resources in the ecosystem.

Question 11

Which of the following statements about trade in endangered species is False ?

Accepted Answer

A)   The principal importers of endangered species are developed countries.
B)   Overharvesting affects animals more than plants.
C)   People who say they are animal lovers are the main contributors to the trade.
D)   The principal exporters of endangered species are developing countries.
E)   Endangered species are listed globally by the IUCN.

Question 12

What is unique about the Mediterranean climate area biome?

Accepted Answer

A)   It is a highly desirable place to live.
B)   It is only found in the Mediterranean area.
C)   It has very poor soil but supports an extremely diverse array of species.
D)   It has a large total area.
E)   It contains a high number of unique species. E

Question 13

Humid tropical forests have extraordinary biological diversity

Accepted Answer

A)   because of the very fertile tropical soils.
B)   because rainfall dissolves soil nutrients and makes them available to plants.
C)   because water is not a limiting factor.
D)   despite a complete absence of nutrients in the environment.
E)   despite the poor, weathered soils.

Question 14

-You have just been beamed into a biome that has relatively stable temperatures and abundant rainfall. Along with your laser gun, your compass, and rain poncho, you have a graph of precipitation and temperature similar to the one above. Which letter marks the area you are in?

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  E

Question 15

Historically, the greatest threat to grasslands has been

Accepted Answer

A)   damage by off-road vehicles.
B)   air pollution.
C)   conversion to farmland.
D)   global climate change.
E)   mineral extraction.

Question 16

Estuaries are often referred to as nursery areas due to the number of organisms that use them for breeding.

Accepted Answer

A) True 
 B)False

Question 17

The giant panda is considered to be a _________________ species.

Accepted Answer

A)   keystone
B)   umbrella
C)   flagship
D)   indicator
E)   principal

Question 18

The main reason for the current high rate of animal extinctions is

Accepted Answer

A)   uncontrolled sport hunting in the developed world.
B)   commercial harvesting of wildlife in Africa.
C)   drought conditions caused by the greenhouse effect.
D)   habitat destruction worldwide.
E)   None of these by themselves cause high rates of animal extinctions, but together they combine to cause high rates. D

Question 19

The biome that is most at risk due to over-harvest of organisms might be the

Accepted Answer

A)   marine biome.
B)   tropical rainforest biome.
C)   tundra biome.
D)   desert biome.

Question 20

What biome is characterized by moderate temperatures and abundant precipitation?

Accepted Answer

A)   chaparral
B)   tropical rainforest
C)   temperate rainforest
D)   taiga
E)   No biome has moderate temperatures and abundant precipitation.

Exam 5: Biomes and Biodiversity

Most of the species that are yet undiscovered are probably

Correct AnswerverifiedShow Answer

Ecological diversity is a measure of the number of

Correct AnswerverifiedShow Answer

Estuaries contain a mix of fresh and salt water.

Correct AnswerverifiedShow Answer

Species diversity is most concentrated in

Correct AnswerverifiedB

The main reason that there are relatively few invertebrates categorized as endangered species is because

Correct AnswerverifiedShow Answer

We are usually referring to species diversity when we talk about biodiversity. However, genetic diversity is also important to ecological systems because diverse genes

Correct AnswerverifiedShow Answer

Ecological diversity is a measure of the number of

Correct AnswerverifiedShow Answer

The total number of living species is probably

Correct AnswerverifiedShow Answer

Which of the following is True?

Correct AnswerverifiedShow Answer

The objective of a species recovery plan is to

Correct AnswerverifiedShow Answer

Which of the following statements about trade in endangered species is False ?

Correct AnswerverifiedShow Answer

What is unique about the Mediterranean climate area biome?

Correct AnswerverifiedE

Humid tropical forests have extraordinary biological diversity

Correct AnswerverifiedShow Answer

-You have just been beamed into a biome that has relatively stable temperatures and abundant rainfall. Along with your laser gun, your compass, and rain poncho, you have a graph of precipitation and temperature similar to the one above. Which letter marks the area you are in?

Correct AnswerverifiedShow Answer

Historically, the greatest threat to grasslands has been

Correct AnswerverifiedShow Answer

Estuaries are often referred to as nursery areas due to the number of organisms that use them for breeding.

Correct AnswerverifiedShow Answer

The giant panda is considered to be a _________________ species.

Correct AnswerverifiedShow Answer

The main reason for the current high rate of animal extinctions is

Correct AnswerverifiedD

The biome that is most at risk due to over-harvest of organisms might be the

Correct AnswerverifiedShow Answer

What biome is characterized by moderate temperatures and abundant precipitation?

Correct AnswerverifiedShow Answer

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B

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E

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D

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