Question 1

When a tapeworm steals nutrients from the gut of a mammalian host,that symbiosis is called

Accepted Answer

A)  predation.
B)  mutualism.
C)  commensalism.
D)  parasitism.
E)  intraspecific competition.F) A) and B)
G) None of the above

Question 2

After a person has taken antibiotics to treat a yeast infection in the genitourinary tract,the yeast infection lessens and the microbes that are normally present reestablish themselves.The reason for the lessening of the yeast infection is explained by

Accepted Answer

A)  predation.
B)  symbiosis.
C)  the competitive exclusion principle.
D)  the co-inclusion principle.
E)  endosymbiosis.F) A) and C)
G) B) and C)

Question 3

The major types of ecosystems are termed

Accepted Answer

A)  habitats.
B)  niches.
C)  biospheres.
D)  terrestrial zones.
E)  biomes.F) A) and D)
G) B) and C)

Question 4

Biomagnification occurs with chemicals that

Accepted Answer

A)  dissolve in only acidic solvents.
B)  dissolve in water.
C)  are not readily degraded and dissolve in fat.
D)  are not readily degraded and dissolve in water.
E)  dissolve in only basic solvents.F) A) and E)
G) B) and C)

Question 5

A species that is so important to its community that its removal can dismantle a food web is termed a

Accepted Answer

A)  capstone species.
B)  flagstone species.
C)  cobblestone species.
D)  cornerstone species.
E)  keystone species.F) A) and B)
G) A) and C)

Question 6

Walleye pike fish are what?

Accepted Answer

A)  secondary consumers
B)  tertiary consumers
C)  primary consumers
D)  producers
E)  decomposersF) B) and E)
G) A) and B)

Question 7

Which is not an important biogeochemical cycle on Earth?

Accepted Answer

A)  ATP cycle
B)  water cycle
C)  carbon cycle
D)  phosphorus cycle
E)  nitrogen cycleF) A) and E)
G) C) and E)

Question 8

Along coastlines,the area between high tide and low tide is the

Accepted Answer

A)  open ocean.
B)  hydrothermal vent.
C)  intertidal zone.
D)  estuary.
E)  continental shelf.F) C) and D)
G) A) and D)

Question 9

If you gave N2 to a culture of nitrogen-fixing bacteria,you would expect to detect

Accepted Answer

A)  nitrates.
B)  ammonium ions.
C)  nitrites.
D)  carbon dioxide.
E)  methanE.F) A) and B)
G) C) and E)

Question 10

Abiotic components of an ecosystem include

Accepted Answer

A)  living components only.
B)  both nonliving and living components.
C)  only plant life.
D)  nonliving components only.
E)  only animal lifE.F) B) and C)
G) C) and E)

Question 11

The area where the fresh water of a river meets the salt water of the ocean is a(n)

Accepted Answer

A)  intertidal zone.
B)  continental shelf.
C)  hydrothermal vent.
D)  open ocean.
E)  estuary.F) A) and E)
G) C) and D)

Question 12

The total of all the resources,both biotic and abiotic,that a species exploits for its survival,growth,and reproduction is its

Accepted Answer

A)  competitive zone.
B)  habitat.
C)  food web.
D)  niche.
E)  biospherE.F) None of the above
G) B) and E)

Question 13

In the section "Investigating Life: Two Kingdoms and a Virus Team Up to Beat the Heat",what is the dependent variable in the figure?

Accepted Answer

A)  number of plants that could grow at 37 ∘\circ∘ C
B)  number of plants that could grow at 65 ∘\circ∘ C
C)  number of plants that died at 65 ∘\circ∘ C
D)  number of plants that died at 37 ∘\circ∘ C
E)  None of the answer choices is correct. F) A) and C)
G) D) and E)

Question 14

An organism that can use solar energy and inorganic substances to produce all the organic material it requires is a(an)

Accepted Answer

A)  producer and heterotroph.
B)  heterotroph.
C)  autotroph and producer.
D)  autotroph.
E)  producer.F) A) and C)
G) A) and D)

Question 15

In the section "Investigating Life: Two Kingdoms and a Virus Team Up to Beat the Heat",what did the scientists conclude from the figure?

Accepted Answer

A)  Plants survived the heat best with virus-infected fungi.
B)  Plants survived the heat best with virus-free fungi.
C)  Plants survived the heat best without fungi.
D)  Plants survived the heat best when infected by the virus.
E)  Plants survived the heat best when not infected by the virus.F) B) and D)
G) A) and B)

Question 16

If you went diving in a freshwater lake,you would see very few rooted aquatic plants after a certain depth.What limits plant growth in deeper water?

Accepted Answer

A)  cold temperatures
B)  a lack of nutrients
C)  a lack of light
D)  too many herbivores
E)  a lack of oxygenF) None of the above
G) C) and D)

Question 17

All the organisms plus the nonliving components of a defined area is a(an)

Accepted Answer

A)  population.
B)  community.
C)  ecosystem.
D)  habitat.
E)  nichE.F) A) and D)
G) C) and E)

Question 18

Which of the following is not a type of symbiosis?

Accepted Answer

A)  parasitism
B)  mutualism
C)  commensalism
D)  predation
E)  No answer is correct.F) B) and E)
G) C) and E)

Question 19

Why are estuaries and coral reefs more productive than deeper regions of the ocean?

Accepted Answer

A)  They have more access to light and nutrients.
B)  They have more access to light and lower salt concentrations in the water.
C)  They have more access to light.
D)  They have more access to nutrients and lower salt concentrations in the water.
E)  They have lower salt concentrations in the water.F) B) and E)
G) B) and D)

Question 20

Which two parameters most influence the location of biomes?

Accepted Answer

A)  altitude and latitude
B)  latitude and temperature
C)  temperature and precipitation
D)  precipitation and altitude
E)  precipitation and latitudeF) D) and E)
G) C) and D)

Exam 19: Communities and Ecosystems

An organism that can use solar energy and inorganic substances to produce all the organic material it requires is a(an)

Correct AnswerverifiedShow Answer

When a tapeworm steals nutrients from the gut of a mammalian host,that symbiosis is called

Correct AnswerverifiedShow Answer

If you gave N2 to a culture of nitrogen-fixing bacteria,you would expect to detect

Correct AnswerverifiedShow Answer

Walleye pike fish are what?

Correct AnswerverifiedShow Answer

All the organisms plus the nonliving components of a defined area is a(an)

Correct AnswerverifiedShow Answer

The area where the fresh water of a river meets the salt water of the ocean is a(n)

Correct AnswerverifiedShow Answer

After a person has taken antibiotics to treat a yeast infection in the genitourinary tract,the yeast infection lessens and the microbes that are normally present reestablish themselves.The reason for the lessening of the yeast infection is explained by

Correct AnswerverifiedShow Answer

In the section "Investigating Life: Two Kingdoms and a Virus Team Up to Beat the Heat",what did the scientists conclude from the figure?

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In the section "Investigating Life: Two Kingdoms and a Virus Team Up to Beat the Heat",what is the dependent variable in the figure?

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Which is not an important biogeochemical cycle on Earth?

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Biomagnification occurs with chemicals that

Correct AnswerverifiedShow Answer

The total of all the resources,both biotic and abiotic,that a species exploits for its survival,growth,and reproduction is its

Correct AnswerverifiedShow Answer

If you went diving in a freshwater lake,you would see very few rooted aquatic plants after a certain depth.What limits plant growth in deeper water?

Correct AnswerverifiedShow Answer

Which two parameters most influence the location of biomes?

Correct AnswerverifiedShow Answer

A species that is so important to its community that its removal can dismantle a food web is termed a

Correct AnswerverifiedShow Answer

Which of the following is not a type of symbiosis?

Correct AnswerverifiedShow Answer

Abiotic components of an ecosystem include

Correct AnswerverifiedShow Answer

The major types of ecosystems are termed

Correct AnswerverifiedShow Answer

Along coastlines,the area between high tide and low tide is the

Correct AnswerverifiedShow Answer

Why are estuaries and coral reefs more productive than deeper regions of the ocean?

Correct AnswerverifiedShow Answer

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If you gave N₂ to a culture of nitrogen-fixing bacteria,you would expect to detect

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