Question 1

Tundra is found in both the Northern and Southern Hemispheres.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is the best definition of a biome?

Accepted Answer

A)  A distinct aquatic ecosystem, surrounded by wetlands and terrestrial upland.
B)  A large distinct terrestrial region similar climate, soil, organisms, regardless of its global location.
C)  One of several types of forests occurring across the globe.
D)  A natural association that consists of all the populations of different species that live and interact together within an area at the same time.E) A) and D)
F) A) and C) B

Question 3

Draw a flow diagram of an old field undergoing succession. What type of succession is this and why?

Accepted Answer

The change in an old field over the year...

Question 4

A biome that has mild, moist winters and hot, dry summers with many fire adapted plants is known as ____________.

Accepted Answer

The answer of A biome that has mild, moist winters...

Question 5

Who wrote The Origin of Species by Means of Natural Selection (1859) ?

Accepted Answer

A)  G. F. Gause
B)  John Muir
C)  Carl Linnaeus
D)  Charles DarwinE) None of the above
F) C) and D)

Question 6

A large, relatively distinct terrestrial region with similar climate, soil, plants, and animals, regardless of where it occurs in the world is known as a(n)_________.

Accepted Answer

The answer of A large, relatively distinct terrestrial region with...

Question 7

Which of the following is the BEST example of primary succession?

Accepted Answer

A)  A forest develops on abandoned farmland
B)  A forest develops on the edge of a retreating glacier
C)  A forest develops in the area of a forest fire
D)  A forest develops in the area of a devastating floodE) B) and D)
F) C) and D)

Question 8

Which of the following was not understood when Darwin was developing his theory of evolution by natural selection?

Accepted Answer

A)  Surplus reproductive capacity of species.
B)  Variation among members of a species.
C)  Differential reproductive success.
D)  Mutations (changes in DN
A)  .E) All of the above
F) A) and B)

Question 9

If each breeding pair of elephants produces 6 offspring during a 90-year life span, in 750 years, a single pair of elephants will have given rise to a population of 15 million elephants. Yet elephants have not overrun the planet. WHY?

Accepted Answer

A)  Elephants have a niche that expands with the population.
B)  Elephants produce more offspring than will survive to maturity.
C)  Most elephants are kept in captivity (circus & zoo) and not allowed to reproduce.
D)  Individual elephants in a population exhibit no variation, reducing their reproductive success.E) B) and C)
F) A) and C)

Question 10

What distinguishes a savanna from other types of grasslands?

Accepted Answer

A)  Warm dry summers and cold dry winters
B)  Widely scattered trees or clumps of trees
C)  Large grazing herbivores
D)  Large predatorsE) A) and B)
F) All of the above

Question 11

Freshwater wetlands and estuaries are highly productive and provide enough food to support a variety of organisms. Define a freshwater wetland and an estuary and discuss the ecologically important roles that these ecosystems play.

Accepted Answer

Lands that shallow fresh water covers fo...

Question 12

The area that is dark green on the map below would MOST likely be what kind of biome?

Accepted Answer

A)  chaparral
B)  desert
C)  tropical rainforest
D)  tundraE) B) and D)
F) All of the above

Question 13

Why is tall grass prairie North America's rarest biome?

Accepted Answer

A)  Historically it only occurred in a very tiny region of North America.
B)  Because over 90% of this biome has been converted to agriculture
C)  Global warming has resulted in the conversion of most tall grass prairie to short grass prairie.
D)  Pollution has degraded most of our tall grass prairie region.E) A) and B)
F) A) and D)

Question 14

What term or phrase is used to describe cumulative genetic changes in populations that occur over generations?

Accepted Answer

A)  natural selection
B)  evolution
C)  genetic variation
D)  biodiversityE) All of the above
F) None of the above B

Question 15

Which of the following would be considered a biome?

Accepted Answer

A)  Lake
B)  bay
C)  Meadow
D)  DesertE) None of the above
F) A) and B)

Question 16

The Boreal forest, or northern coniferous forest is also called the ________.

Accepted Answer

The answer of The Boreal forest, or northern coniferous forest...

Question 17

Which of the following characterizes both the savanna and the chaparral?

Accepted Answer

A)  Periodic fires
B)  Extensive stands of trees
C)  Large herds of herbivorous mammals
D)  Soils with high mineral contentE) All of the above
F) None of the above A

Question 18

Which of the following is NOT important in determining the distribution of organisms in aquatic biomes?

Accepted Answer

A)  Light penetration
B)  Mineral nutrient concentrations
C)  Precipitation
D)  SalinityE) C) and D)
F) A) and B)

Question 19

Which of the following BEST defines ecosystem services?

Accepted Answer

A)  Important environmental benefits provided by ecosystems
B)  Environmental services that humans invest in conserving ecosystems
C)  Environmental activities that are unique to each ecosystem or biome
D)  Economic use of ecosystems as sinksE) A) and B)
F) None of the above

Question 20

What kind of ecosystem is pictured here?

Accepted Answer

A)  Fresh water lake
B)  Freshwater swamp
C)  Salt marsh
D)  Tropical rainforestE) C) and D)
F) None of the above

Exam 6: Ecosystems and Evolution

Tundra is found in both the Northern and Southern Hemispheres.

Correct AnswerverifiedShow Answer

Which of the following is the best definition of a biome?

Correct AnswerverifiedB

Draw a flow diagram of an old field undergoing succession. What type of succession is this and why?

Correct AnswerverifiedThe change in an old field over the year...View AnswerShow Answer

A biome that has mild, moist winters and hot, dry summers with many fire adapted plants is known as ____________.

Correct AnswerverifiedShow Answer

Who wrote The Origin of Species by Means of Natural Selection (1859) ?

Correct AnswerverifiedShow Answer

A large, relatively distinct terrestrial region with similar climate, soil, plants, and animals, regardless of where it occurs in the world is known as a(n)_________.

Correct AnswerverifiedShow Answer

Which of the following is the BEST example of primary succession?

Correct AnswerverifiedShow Answer

Which of the following was not understood when Darwin was developing his theory of evolution by natural selection?

Correct AnswerverifiedShow Answer

If each breeding pair of elephants produces 6 offspring during a 90-year life span, in 750 years, a single pair of elephants will have given rise to a population of 15 million elephants. Yet elephants have not overrun the planet. WHY?

Correct AnswerverifiedShow Answer

What distinguishes a savanna from other types of grasslands?

Correct AnswerverifiedShow Answer

Freshwater wetlands and estuaries are highly productive and provide enough food to support a variety of organisms. Define a freshwater wetland and an estuary and discuss the ecologically important roles that these ecosystems play.

Correct AnswerverifiedLands that shallow fresh water covers fo...View AnswerShow Answer

The area that is dark green on the map below would MOST likely be what kind of biome?

Correct AnswerverifiedShow Answer

Why is tall grass prairie North America's rarest biome?

Correct AnswerverifiedShow Answer

What term or phrase is used to describe cumulative genetic changes in populations that occur over generations?

Correct AnswerverifiedB

Which of the following would be considered a biome?

Correct AnswerverifiedShow Answer

The Boreal forest, or northern coniferous forest is also called the ________.

Correct AnswerverifiedShow Answer

Which of the following characterizes both the savanna and the chaparral?

Correct AnswerverifiedA

Which of the following is NOT important in determining the distribution of organisms in aquatic biomes?

Correct AnswerverifiedShow Answer

Which of the following BEST defines ecosystem services?

Correct AnswerverifiedShow Answer

What kind of ecosystem is pictured here?

Correct AnswerverifiedShow Answer

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B

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The change in an old field over the year...
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Lands that shallow fresh water covers fo...
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B

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A

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