Question 1

An organism that obtains its food from the process of photosynthesis is an)

Accepted Answer

A)   autotroph.
B)   consumer.
C)   heterotroph.
D)   decomposer.
E)   omnivore.F) C) and D)
G) A) and B)

Question 2

Which of the following is an example of predation?

Accepted Answer

A)   daddy-long-legs, a type of arachnid that eats dead and decaying matter
B)   marine filter-feeders that have long tentacles to filter food particles from the water
C)   a starfish which is able to evert its stomach to break open and eat clams
D)   a vulture feeding on a dead carcass
E)   a tick that attaches to a deer and sucks its bloodF) A) and E)
G) C) and D)

Question 3

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 hunts and eats a fly.
D)   The longest tapeworm removed from a human was approximately 11 meters long. Tapeworms do not have a digestive system, but obtain all of their nutrients from the host.
E)   Pseudoscorpions are small, harmless arachnids. To move from one place to another, they will sometimeslatch onto the legs of flies and thus be carried long distances that they would not readily be able to traverse.F) None of the above
G) B) and D)

Question 4

As humans continue to use fossil fuels as a primary source of energy, the amount of carbon entering the atmosphere from fossil fuel combustion will continue to increase dramatically. What is the effect of large-scale deforestation on the carbon in the atmosphere?

Accepted Answer

A)   Because trees are a major sink for atmospheric carbon, fewer trees will result in less carbon being removed from the atmosphere for photosynthesis.
B)   As trees are removed, there is more room for carbon to enter the soil directly and be used by other plants.
C)   The large-scale removal of forests does not have any real effect on atmospheric carbon, because carbon dioxide is not stored in trees.
D)   Because trees produce carbon dioxide, the amount of carbon in the atmosphere will decrease with their wide-scale removal.E) None of the above
F) All of the above

Question 5

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) A) and E)
G) B) and E)

Question 6

Which of the following would be considered a parasitic relationship?

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 hunts and eats a fly.
D)   The longest tapeworm removed from a human was approximately 11 meters long. Tapeworms do not have a digestive system, but obtain all of their nutrients from the host, which can cause problems for the host especially if he or she is undernourished.E) A) and B)
F) A) and D)

Question 7

Which of the following boxes indicates the process of denitrification?

Accepted Answer

A)   Box A
B)   Box B
C)   Box C
D)   Box D
E)   Box EF) None of the above
G) C) and E)

Question 8

When too many nutrients are added to of a body of water, this is known as

Accepted Answer

A)   a biogeochemical cycle.
B)   reservoirs.
C)   eutrophication.
D)   global warming.
E)   nitrogen fixing.F) C) and E)
G) All of the above

Question 9

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

Accepted Answer

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

Question 10

A keystone species is

Accepted Answer

A)   the largest species in a community.
B)   the most numerous species in a community.
C)   the least numerous species in a community.
D)   a species on which many other species depend.
E)   the species that occupies most of the niches within a particular environment.F) B) and C)
G) B) and E)

Question 11

What is the main reason that the tundra does not have large plants?

Accepted Answer

A)   The seeds of large plants were never dispersed into these regions.
B)   The amount of sunlight is not great enough for large plants to survive.
C)   The amount of rainfall is not enough for large plants to survive.
D)   The other species of plants have outcompeted them for resources.
E)   The permafrost persists, even during the summer.F) C) and D)
G) B) and C)

Question 12

To increase her tomato yield, an organic gardener plants legumes alongside her tomato bushes rather than using fertilizers. Why did she plant legumes?

Accepted Answer

A)   Legumes have root nodules with nitrogen-fixing bacteria.
B)   Legumes convert ammonium to nitrates.
C)   Root nodules on legumes have denitrifying bacteria.
D)   Legumes are an immediate source of phosphorus and nitrogen.
E)   Root nodules on legumes produce nitrifying bacteria.F) None of the above
G) B) and D)

Question 13

Which of the following is an example of an ecosystem?

Accepted Answer

A)   zebras and the lions that prey on them
B)   a coral reef together with all the fishes and invertebrates living in and around it
C)   flowering plants and all the insects and birds that pollinate them
D)   male prairie chickens competing for access to mates
E)   rabbits eating carrotsF) B) and E)
G) All of the above

Question 14

What is the first step in energy flow through an ecosystem?

Accepted Answer

A)   Producers absorb solar energy.
B)   Producers are eaten by the herbivores.
C)   Decomposers break down the organic matter and make it available for the producers.
D)   Top-level carnivores eat the herbivores or omnivores within the ecosystem.
E)   Producers absorb nutrients from the soil.F) C) and D)
G) A) and D)

Question 15

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 B)
G) A) and C)

Question 16

What process is occurring in Box C?

Accepted Answer

A)   nitrification
B)   decomposition
C)   denitrification
D)   nitrogen fixing
E)   nitrogen incorporationF) A) and E)
G) A) and D)

Question 17

Martin is studying blue gill fish, which are insectivores. How would you classify this fish?

Accepted Answer

A)   autotrophic consumer
B)   autotrophic producer
C)   heterotrophic decomposer
D)   detritivore
E)   heterotrophic consumerF) None of the above
G) A) and D)

Question 18

Which of the following would be considered a mutualistic relationship?

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
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 hunts and eats a fly.
D)   The longest tapeworm removed from a human was approximately 11 meters long. Tapeworms do not have a digestive system, but obtain all of their nutrients from the host.E) A) and C)
F) C) and D)

Exam 31: Communities and Ecosystems

What is the main reason that the tundra does not have large plants?

Correct Answer
verified

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

Correct Answer
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Which of the following is an example of an ecosystem?

Correct Answer
verified

Which of the following boxes indicates the process of denitrification?

Correct Answer
verified

A community is

Correct Answer
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What process is occurring in Box C?

Correct Answer
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To increase her tomato yield, an organic gardener plants legumes alongside her tomato bushes rather than using fertilizers. Why did she plant legumes?

Correct Answer
verified

Which of the following is an example of predation?

Correct Answer
verified

Which of the following would be considered a parasitic relationship?

Correct Answer
verified

What is the first step in energy flow through an ecosystem?

Correct Answer
verified

When too many nutrients are added to of a body of water, this is known as

Correct Answer
verified

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

Correct Answer
verified

As humans continue to use fossil fuels as a primary source of energy, the amount of carbon entering the atmosphere from fossil fuel combustion will continue to increase dramatically. What is the effect of large-scale deforestation on the carbon in the atmosphere?

Correct Answer
verified

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

Correct Answer
verified

Martin is studying blue gill fish, which are insectivores. How would you classify this fish?

Correct Answer
verified

An organism that obtains its food from the process of photosynthesis is an)

Correct Answer
verified

Which of the following would be considered a mutualistic relationship?

Correct Answer
verified

A keystone species is

Correct Answer
verified

Exam 31: Communities and Ecosystems

What is the main reason that the tundra does not have large plants?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is an example of an ecosystem?

Correct AnswerverifiedShow Answer

Which of the following boxes indicates the process of denitrification?

Correct AnswerverifiedShow Answer

A community is

Correct AnswerverifiedShow Answer

What process is occurring in Box C?

Correct AnswerverifiedShow Answer

To increase her tomato yield, an organic gardener plants legumes alongside her tomato bushes rather than using fertilizers. Why did she plant legumes?

Correct AnswerverifiedShow Answer

Which of the following is an example of predation?

Correct AnswerverifiedShow Answer

Which of the following would be considered a parasitic relationship?

Correct AnswerverifiedShow Answer

What is the first step in energy flow through an ecosystem?

Correct AnswerverifiedShow Answer

When too many nutrients are added to of a body of water, this is known as

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

As humans continue to use fossil fuels as a primary source of energy, the amount of carbon entering the atmosphere from fossil fuel combustion will continue to increase dramatically. What is the effect of large-scale deforestation on the carbon in the atmosphere?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Martin is studying blue gill fish, which are insectivores. How would you classify this fish?

Correct AnswerverifiedShow Answer

An organism that obtains its food from the process of photosynthesis is an)

Correct AnswerverifiedShow Answer

Which of the following would be considered a mutualistic relationship?

Correct AnswerverifiedShow Answer

A keystone species is

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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