Question 1

The base of the marine food web is

Accepted Answer

A)  phytoplankton.
B)  sharks.
C)  sea stars.
D)  coral reef organisms.E) A) and D)
F) A) and C)

Question 2

The main threat for the current high rate of 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)  there is not one,extinction rates this high are commonF) C) and E)
G) B) and E)

Question 3

The temperature boundary in freshwater lakes is the

Accepted Answer

A)  thermocline.
B)  epilimnion.
C)  benthos.
D)  hypolimnion.E) A) and B)
F) None of the above

Question 4

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 5

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.F) A) and E)
G) C) and D)

Question 6

This biome is characterized by steady levels of precipitation all year,but seasonal temperatures.Average winter temperatures are below freezing,spring and fall temperatures are mild,and summers are quite warm.

Accepted Answer

A)  temperate deciduous forest
B)  tropical rainforest
C)  temperate rainforest
D)  desert
E)  tropical savannaF) B) and E)
G) A) and D)

Question 7

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.E) None of the above
F) A) and C)

Question 8

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.F) None of the above
G) B) and E)

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.F) A) and E)
G) D) and E)

Question 10

This biome has steady average temperature each month of the year and high annual precipitation that is steady year-round,not seasonal.

Accepted Answer

A)  tropical rainforest
B)  temperate rainforest
C)  tropical savanna
D)  temperate grasslands
E)  temperate deciduous forestF) D) and E)
G) C) and E)

Question 11

Use the following graph to answer the questions. 
-The area marked "A" has a

Accepted Answer

A)  wide precipitation range and narrow temperature range.
B)  narrow precipitation and temperature range.
C)  wide precipitation and temperature range.
D)  wide temperature range and narrow precipitation range.
E)  varying temperature and narrow precipitation range.F) A) and D)
G) A) and E)

Question 12

Tropical moist forests have high species diversity because they have highly developed,diverse niche opportunities and habitats.

Accepted Answer

A) True 
 B)False

Question 13

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.F) D) and E)
G) B) and D)

Question 14

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.F) None of the above
G) A) and E)

Question 15

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.F) B) and E)
G) A) and B)

Question 16

In contrast with the ________,the soil of the ________ is more nutrient-rich and this type of biome has fewer insects,parasites,and fungal diseases.Therefore,in many places,these areas are highly endangered.

Accepted Answer

A)  temperate grasslands;tropical seasonal forest
B)  tropical rainforest;tropical seasonal forest
C)  tundra;boreal forests
D)  tropical seasonal forest;tropical rainforest
E)  boreal forests;tundraF) A) and E)
G) A) and D)

Question 17

The primary difference between a bog and a fen is

Accepted Answer

A)  fens are fed by groundwater,bogs are fed by rainfall.
B)  fens have many trees,bogs have none.
C)  fens are always on the coast,bogs are inland.
D)  bogs are found only in brackish areas.
E)  There are no differences between fens and bogs,they are synonymous.F) C) and D)
G) A) and B)

Question 18

In terms of species diversity and complexity,a coral reef would be similar to which terrestrial biome?

Accepted Answer

A)  savannah
B)  arctic tundra
C)  tropical rainforest
D)  chaparralE) B) and C)
F) All of the above

Question 19

In general,funding for recovery programs is given to species that are

Accepted Answer

A)  in the most danger.
B)  the most important.
C)  most well known.
D)  most numerous.
E)  keystone species.F) A) and D)
G) A) and C)

Question 20

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)  None of these statements are false.F) A) and B)
G) All of the above

Exam 5: Biomes and Biodiversity

Ecological diversity is a measure of the number of

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The main threat for the current high rate of extinctions is

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Which of the following is true?

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In terms of species diversity and complexity,a coral reef would be similar to which terrestrial biome?

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

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In contrast with the ________,the soil of the ________ is more nutrient-rich and this type of biome has fewer insects,parasites,and fungal diseases.Therefore,in many places,these areas are highly endangered.

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

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The temperature boundary in freshwater lakes is the

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The objective of a species recovery plan is to

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In general,funding for recovery programs is given to species that are

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This biome has steady average temperature each month of the year and high annual precipitation that is steady year-round,not seasonal.

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This biome is characterized by steady levels of precipitation all year,but seasonal temperatures.Average winter temperatures are below freezing,spring and fall temperatures are mild,and summers are quite warm.

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The base of the marine food web is

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Species diversity is most concentrated in

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

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

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Tropical moist forests have high species diversity because they have highly developed,diverse niche opportunities and habitats.

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Ecological diversity is a measure of the number of

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The primary difference between a bog and a fen is

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Use the following graph to answer the questions. -The area marked "A" has a

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In contrast with the ,the soil of the is more nutrient-rich and this type of biome has fewer insects,parasites,and fungal diseases.Therefore,in many places,these areas are highly endangered.

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