Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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A
functioning aquarium displays a. | a community. | c. | an ecosystem. | b. | a
habitat. | d. | All of the
above | | | | |
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2.
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A
group of organisms of different species living together in a particular place is called
a a. | community. | c. | biome. | b. | population. | d. | habitat. | | | | |
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3.
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The
physical location of an ecosystem in which a given species lives is called a a. | habitat. | c. | community. | b. | tropical level. | d. | food zone. | | | | |
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4.
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All
of the following are abiotic factors of a habitat except a. | soil. | c. | water. | b. | plants. | d. | weather. | | | | |
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5.
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Succession is a. | an organism’s ability to survive in its
environment. | b. | the number of species living in an
ecosystem. | c. | the regular progression of species replacement in an
environment. | d. | the transfer of energy through a food
chain. | | |
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6.
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Which
of the following types of succession would most likely occur following a forest
fire? a. | primary
succession | c. | secondary
succession | b. | old field succession | d. | lake succession | | | | |
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7.
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When
an organism dies, the nutrients in its body a. | can never be reused by other living
things. | b. | are immediately released into the
atmosphere. | c. | are released by the action of
decomposers. | d. | None of the above | | |
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8.
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Fungi
are a. | decomposers. | c. | omnivores. | b. | scavengers. | d. | autotrophs. | | | | |
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9.
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Organisms that manufacture organic nutrients for an ecosystem are
called a. | primary
consumers. | c. | primary
producers. | b. | predators. | d. | scavengers. | | | | |
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10.
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cows
: herbivores :: a. | horses :
carnivores | c. | algae :
consumers | b. | plants : producers | d. | caterpillars : producers | | | | |
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11.
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Refer
to the illustration above. The photosynthetic algae are a. | producers. | c. | parasites. | b. | consumers. | d. | decomposers. | | | | |
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12.
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Refer
to the illustration above. The diagram, which shows how energy moves through an ecosystem, is known
as a a. | habitat. | c. | food
net. | b. | food
chain. | d. | food
web. | | | | |
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13.
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Refer
to the illustration above. Killer whales feed at the a. | first and second
trophic levels. | c. | second and third
trophic levels. | b. | second trophic level only. | d. | third and fourth trophic levels. | | | | |
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14.
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Refer
to the illustration above. The diagram represents the decrease in a. | the number of
organisms between lower and higher trophic levels. | b. | available energy
between lower and higher trophic levels. | c. | diversity of organisms between lower and higher
levels. | d. | All of the above | | |
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15.
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Which
of the following are detritivores? a. | worms | c. | fungi | b. | vultures | d. | All of the
above | | | | |
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16.
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The
number of trophic levels in an ecological pyramid a. | is limitless. | b. | is limited by
the amount of energy that is lost at each trophic level. | c. | never exceeds
four. | d. | never exceeds three. | | |
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17.
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In
going from one trophic level to the next higher level, a. | the number of
organisms increases. | b. | the amount of usable energy
increases. | c. | the amount of usable energy
decreases. | d. | diversity of organisms increases. | | |
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18.
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The
total dry weight of the organisms in an ecosystem is called a. | trophic
level. | c. | energy
level. | b. | biomass. | d. | ecomass. | | | | |
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19.
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Refer
to the illustration above. At each trophic level, the energy stored in the organisms in that level
is a. | about one-tenth
of the energy in the level below it. | b. | about one-tenth of the energy in the level above
it. | c. | 50 percent of
the energy in the level below it. | d. | 100 percent of the energy in the level below
it. | | |
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20.
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The
paths of water, carbon, nitrogen, and phosphorus pass from the nonliving environment to living
organisms and back to the nonliving environment in closed circles called a. | living
cycles. | c. | biogeochemical
cycles. | b. | environcycles. | d. | None of the above | | | | |
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21.
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Coal,
oil, and natural gas a. | are formed from decayed plants. | b. | are fossil
fuels. | c. | release carbon dioxide when they are
burned. | d. | All of the above | | |
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22.
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Humans are affecting the carbon cycle by a. | burning fossil
fuels. | b. | destroying vegetation that absorbs carbon
dioxide. | c. | using electrical labor-saving
devices. | d. | All of the above | | |
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23.
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Which
of the following is part of the nitrogen cycle? a. | conversion of atmospheric nitrogen into usable organic
compounds by bacteria | b. | conversion of nitrogen from decaying organisms into
ammonia | c. | nitrogen fixation | d. | All of the
above | | |
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24.
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denitrification : nitrogen gas in the atmosphere :: a. | more rain :
transformation of rain forests | b. | more transpiration : arid weather | c. | burning fossil
fuels : carbon in the atmosphere | d. | combustion : ground water | | |
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25.
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Which
of the following is common to the carbon cycle, the nitrogen cycle, and the water
cycle? a. | The substance is
rearranged into different types of molecules as it moves through its cycle. | b. | The substance
must pass through organisms in order to complete its cycle. | c. | The largest
reserves of the substance are always in organisms. | d. | The substance is
required by all living things and is involved in many processes that occur in all living
things. | | |
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