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Biology > Bio Quiz 6 > Flashcards

Bio Quiz 6 Flashcards

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1
Q

An organism that tends to grow exponentially when allowed to reproduce is

  None of the listed answers are correct 
  dispersed. 
  All of the listed answers are correct 
  a K-strategist. 
  an r-strategist. 
  polygenic.
A

an r-strategist

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2
Q

An organism that obtains energy from organic wastes and dead bodies is a(n)

  omnivore. 
  None of the listed answers are correct 
  herbivore. 
  carnivore. 
  detritivore. 
  All of the listed answers are correct
A

detritivore

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3
Q

Which of the following causes acid rain?

  burning high-sulfur coal 
  None of the listed answers are correct 
  releasing chlorofluorocarbons 
  polluting ground water 
  All of the listed answers are correct 
  scrubbing smokestack emissions
A

burning high-sulfur coal

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4
Q

Why is it unlikely that natural selection will quickly reduce the frequency of hemophilia?

All of the listed answers are correct
Hemophilia is not a genetic disorder.
The frequency of recessive homozygotes is too great.
Natural selection acts only on recessive homozygotes.
Dominant homozygotes can have affected children.
None of the listed answers are correct

A

Natural selection acts only on recessive homozygotes.

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5
Q

Plants return water to the atmosphere by

  succession. 
  None of the listed answers are correct 
  nitrification. 
  assimilation. 
  transpiration. 
  All of the listed answers are correct
A

transpiration

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6
Q

In a population model, a limited resource is known as a

  density-dependent factor. 
  None of the listed answers are correct 
  All of the listed answers are correct 
  logistic model. 
  density-independent factor. 
  polygenic trait.
A

density-dependent factor.

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7
Q

The interaction between a spruce tree and a hemlock tree, both of which require nitrogen from the soil, is an example of

competition.
commensalism.
mutualism.
succession.
None of the listed answers are correct
All of the listed answers are correct

A

competition

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8
Q

Which role is not performed by bacteria in the nitrogen cycle?

   All of the listed answers are correct
   None of the listed answers are correct
   fixing nitrogen
  changing nitrates to ammonia   
  changing urea to ammonia
  turning nitrates into nitrogen gas
A

changing nitrates to ammonia

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9
Q

A _________ is a class of stable chemicals that break down and release free chlorine atoms high in the atmosphere.

  hydrocarbon 
  DDT 
  All of the listed answers are correct 
  CFC 
  greenhouse gas 
  None of the listed answers are correct
A

CFC

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10
Q

Which sequence shows the correct order of succession at Glacier Bay, Alaska?

    All of the listed answers are correct
    Dryas, hemlock, alder
   alder, Dryas, hemlock
   Dryas, alder, Sitka spruce   
   mosses, hemlock, Sitka spruce
  None of the listed answers are correct
A

Dryas, alder, Sitka spruce

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11
Q

A mountain lion is a(n)

  omnivore. 
  All of the listed answers are correct 
  herbivore. 
  None of the listed answers are correct 
  detritivore. 
  carnivore.
A

carnivore

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12
Q

The principle of competitive exclusion indicates that

niche subdivision may occur.
one species will eliminate a competing species if their niches are very similar. X
competition ends in worldwide elimination of a species
None of the listed answers are correct
a niche can be shared by two species if their niches are very similar.
All of the listed answers are correct

A

one species will eliminate a competing species if their niches are very similar. X

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13
Q

What critical role is played by fungi and bacteria in any ecosystem?

  All of the listed answers are correct 
  decomposition 
  physical weathering 
  primary production 
  boundary setting 
  None of the listed answers are correct
A

decomposition

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14
Q

According to the Hardy-Weinberg principle, allele frequencies in randomly mating populations without selection

All of the listed answers are correct
None of the listed answers are correct
do not change.
change when birth rate exceeds death rate.
increase and then decrease.
decrease and then increase.

A

do not change

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15
Q

The ways in which an organism interacts with its environment make up its

  All of the listed answers are correct 
  habitat. 
  None of the listed answers are correct 
  niche. 
  space. 
  ecosystem.
A

Niche

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16
Q

Ecosystems differ from communities in that ecosystems usually contain

  several climates. 
  only one food web. 
  None of the listed answers are correct 
  only one habitat. 
  All of the listed answers are correct 
  several communities.
A

several communities.

17
Q

The burning of fossil fuels has changed the atmosphere by

It is the largest extinction event since the dinosaurs disappeared.
None of the listed answers are correct
increasing the amount of atmospheric carbon dioxide.
Potentially useful species are becoming extinct.
One of its causes is the destruction of tropical rain forests.
All of the listed answers are correct

A

increasing the amount of atmospheric carbon dioxide.

18
Q

Which of the following is a transitional zone between tropical rain forest and desert?

  None of the listed answers are correct 
  All of the listed answers are correct 
  tundra 
  temperate deciduous forest 
  taiga 
  savanna
A

savanna

19
Q

The process by which materials pass between the nonliving environment and living organisms is called a(n)

  energy pyramid. 
  None of the listed answers are correct 
  All of the listed answers are correct 
  biogeochemical cycle. 
  food web. 
  primary succession.
A

biogeochemical cycle.

20
Q

Which of the following statements about the extinction of species that is now occurring is not true?

One of its causes is the destruction of tropical rain forests.
It is confined to tropical countries.
It is the largest extinction event since the dinosaurs disappeared.
None of the listed answers are correct
All of the listed answers are correct
Potentially useful species are becoming extinct.

A

It is confined to tropical countries

Biology (14 decks)

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