Question 1

In an aquatic ecosystem, the aquatic plants are eaten by small invertebrates that in turn are eaten by crayfish, the crayfish are eaten by fish, and the fish are eaten by ducks. In this system, the greatest amount of biomass would be found in the _____________.

Accepted Answer

A)   aquatic plants
B)   small invertebrates
C)   crayfish
D)   fish
E)   ducksF) D) and E)
G) A) and B)

Question 2

Figure: 
-Based on the figure shown here, which of the following is a secondary consumer?

Accepted Answer

A)   skunk
B)   owl
C)   rabbit
D)   insects
E)   deerF) A) and D)
G) C) and D)

Question 3

A decomposer ultimately obtains all its food from

Accepted Answer

A)   sunlight.
B)   mushrooms.
C)   preying on other living organism.
D)   parasitizing living organisms.
E)   dead and decaying plant matter.F) A) and C)
G) B) and D)

Question 4

Which of the following would be considered an example of competition?

Accepted Answer

A)   Some species of crabs decorate their shells with sea anemones and other corals. These "decorations" help camouflage the crab and the movement of the crab from one area to the next exposes the corals and anemones to different sources of food.
B)   Some spiders do not build webs, but live in the web of another species. When a prey item is caught in the web, the non-web building spider will sneak in and steal the prey.
C)   A praying mantis hunting and eating a fly is an example.
D)   The longest tapeworm removed from a human was approximately 11 meters long. Tapeworms do not have a digestive system, but obtains all of their nutrients from the host.
E)   Pseudoscorpions are small, harmless arachnids. To move from one place to another, they will sometimes latch onto the legs of flies and thus be carried long distances that they would not readily be able to traverse.F) A) and B)
G) A) and C)

Question 5

Which of the following is an example of species richness?

Accepted Answer

A)   vultures feeding on the remains of a carcass
B)   herd of 60 elk, 6 bald eagles and 90 white pine trees
C)   prairie chickens at a lake competing for access to mates
D)   diving beetles, blue gill, lilies, water mites, crayfish
E)   100 kg of vegetation, 10 kg of grasshoppers, 1 kg of spidersF) None of the above
G) A) and B)

Question 6

Which of the following is an example of primary succession?

Accepted Answer

A)   new growth in a forest after a forest fire
B)   regrowth and recolonization on Mt. St. Helens in areas covered with rock and lava
C)   a wheat field that is not is allowed to grow wild
D)   regrowth of vegetation in an area covered by a mud slide after flooding
E)   colonization of an isolated island by a population of long-horned beetlesF) A) and B)
G) A) and C)

Question 7

Which of the following is NOT true about species diversity?

Accepted Answer

A)   It includes species richness.
B)   It includes species diversity.
C)   It is influenced by the relative abundance of species.
D)   It is influenced by the distribution of the different species.
E)   It is not impacted by species richness.F) B) and C)
G) A) and E)

Question 8

Which two terrestrial biomes are the most similar with regards to rainfall?

Accepted Answer

A)   desert & taiga
B)   tundra & desert
C)   desert & temperate forest
D)   temperate grasslands & desert
E)   temperate forests & rainforestsF) A) and C)
G) B) and D)

Question 9

The first pioneer species to appear in an area undergoing secondary succession is

Accepted Answer

A)   an equilibrium species.
B)   long-lived.
C)   able to produce numerous offspring.
D)   a secondary consumer.
E)   slow to reach sexual maturity.F) A) and E)
G) A) and D)

Question 10

Which of the following is an example of a sedimentary cycle?

Accepted Answer

A)   the phosphorus cycle
B)   the nitrogen cycle
C)   the carbon cycle
D)   the atmospheric cycle
E)   eutrophic cycleF) C) and D)
G) A) and E)

Question 11

A community is

Accepted Answer

A)   populations of multiple species interacting with one another in a specific area.
B)   populations of organisms and the abiotic factors in their environment.
C)   competition for food between individuals in a population.
D)   all the biotic and abiotic factors in an environment.
E)   multiple organisms of the same species living in a specific area.F) None of the above
G) A) and D)

Question 12

Figure: 
-Based on the figure shown here, which of the following is both a primary and secondary consumer?

Accepted Answer

A)   skunk
B)   mice
C)   rabbit
D)   deer
E)   snakeF) C) and D)
G) A) and D)

Question 13

All of the following are reservoirs EXCEPT ________.

Accepted Answer

A)   oil
B)   calcium carbonate
C)   coal
D)   natural gas
E)   bicarbonateF) A) and D)
G) B) and E)

Question 14

The physical space that an organism occupies in its environment is its ______________.

Accepted Answer

A)   habitat
B)   niche
C)   biotic factor
D)   role
E)   abiotic factorF) A) and B)
G) C) and D)

Exam 31: Communities and Ecosystems

Figure: -Based on the figure shown here, which of the following is a secondary consumer?

Correct Answer
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Which of the following is an example of primary succession?

Correct Answer
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The first pioneer species to appear in an area undergoing secondary succession is

Correct Answer
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Figure: -Based on the figure shown here, which of the following is both a primary and secondary consumer?

Correct Answer
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All of the following are reservoirs EXCEPT ________.

Correct Answer
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Which two terrestrial biomes are the most similar with regards to rainfall?

Correct Answer
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The physical space that an organism occupies in its environment is its ______________.

Correct Answer
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Which of the following is an example of a sedimentary cycle?

Correct Answer
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Which of the following is an example of species richness?

Correct Answer
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A community is

Correct Answer
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In an aquatic ecosystem, the aquatic plants are eaten by small invertebrates that in turn are eaten by crayfish, the crayfish are eaten by fish, and the fish are eaten by ducks. In this system, the greatest amount of biomass would be found in the _____________.

Correct Answer
verified

Which of the following is NOT true about species diversity?

Correct Answer
verified

A decomposer ultimately obtains all its food from

Correct Answer
verified

Which of the following would be considered an example of competition?

Correct Answer
verified

Exam 31: Communities and Ecosystems

Figure: -Based on the figure shown here, which of the following is a secondary consumer?

Correct AnswerverifiedShow Answer

Which of the following is an example of primary succession?

Correct AnswerverifiedShow Answer

The first pioneer species to appear in an area undergoing secondary succession is

Correct AnswerverifiedShow Answer

Figure: -Based on the figure shown here, which of the following is both a primary and secondary consumer?

Correct AnswerverifiedShow Answer

All of the following are reservoirs EXCEPT ________.

Correct AnswerverifiedShow Answer

Which two terrestrial biomes are the most similar with regards to rainfall?

Correct AnswerverifiedShow Answer

The physical space that an organism occupies in its environment is its ______________.

Correct AnswerverifiedShow Answer

Which of the following is an example of a sedimentary cycle?

Correct AnswerverifiedShow Answer

Which of the following is an example of species richness?

Correct AnswerverifiedShow Answer

A community is

Correct AnswerverifiedShow Answer

In an aquatic ecosystem, the aquatic plants are eaten by small invertebrates that in turn are eaten by crayfish, the crayfish are eaten by fish, and the fish are eaten by ducks. In this system, the greatest amount of biomass would be found in the _____________.

Correct AnswerverifiedShow Answer

Which of the following is NOT true about species diversity?

Correct AnswerverifiedShow Answer

A decomposer ultimately obtains all its food from

Correct AnswerverifiedShow Answer

Which of the following would be considered an example of competition?

Correct AnswerverifiedShow Answer

Correct Answer
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