Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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Figure 2-1
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1.
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Referring to Figure 2-1, suppose 10 000 units of energy are available at the level of
the grasses. What is the total number of energy units lost by the time energy reaches the
coyote? a. | 990
units | c. | 9990
units | b. | 90 units | d. | 9900 units | | | | |
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2.
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Referring to Figure 2-1, the coyotes would be considered _____. a. | third-order
consumers | c. | second-order
consumers | b. | herbivores | d. | decomposers | | | | |
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3.
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Referring to Figure 2-1, energy flows from _____. a. | coyotes to
grasses | c. | cats to
mice | b. | mice to
cats | d. | coyotes to
cats | | | | |
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4.
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Referring to Figure 2-1, as matter and energy move from grasses to coyotes, the amount
of available energy _____. a. | increases | b. | decreases then
increases | c. | decreases | d. | increases or
decreases but population size remains the same | | |
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5.
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Referring to Figure 2-1, the relationship between cats and mice could best be
described as _____. a. | consumer-producer | c. | predator-prey | b. | parasite-host | d. | scavenger-carrion | | | | |
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6.
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The
group of animals in Figure 2-6 is an example of what?
Figure 2-6 a. | ecosystem | c. | biosphere | b. | population | d. | community | | | | |
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7.
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An
ecologist who studies how several species in an area interact among each other and with the abiotic
parts of the environment is interested in the biological organization level called
a(n) _____. a. | organism | c. | ecosystem | b. | community | d. | population | | | | |
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8.
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An
ecologist who studies how several species in an area interact is interested in the biological
organization called a(n) _____. a. | population | c. | organism | b. | ecosystem | d. | community | | | | |
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9.
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Identify the abiotic factor labeled in the ecosystem shown in Figure
2-5.
Figure 2-5 a. | rock | c. | mouse | b. | tree | d. | butterfly | | | | |
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10.
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Some
birds are known as honey guides because they may be followed by humans to wild beehives. When the
humans take honey from the hives, the birds are able to feast on the honey and bees, too. This type
of relationship can best be described as _____. a. | commensalism | c. | mutualism | b. | symbiosis | d. | parasitism | | | | |
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11.
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Carbon dioxide in the atmosphere enters the biotic parts of the biosphere through
_____. a. | photosynthesis | c. | burning of
forests | b. | combustion of fossil fuels | d. | all of these | | | | |
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12.
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Nitrogen is released to the abiotic parts of the biosphere from the processes of death
and _____. a. | decay by
bacteria | c. | infiltration of
groundwater | b. | runoff | d. | lightning in storm clouds | | | | |
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13.
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Which
organism shown in the pyramid shown in Figure 2-9 receives the highest percentage of energy from the
sun?
Figure 2-9 a. | birds | c. | grass | b. | grasshoppers | d. | fox | | | | |
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14.
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Water
is lost to the abiotic parts of the biosphere from the biotic parts by the process of
_____. a. | photosynthesis | c. | infiltration | b. | transpiration | d. | precipitation | | | | |
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15.
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The
organism shown in Figure 2-12 is involved in which type of symbiosis?
Figure 2-12 a. | mutualism | c. | parasitism | b. | predatorism | d. | commensalism | | | | |
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16.
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Where
is the biosphere in Figure 2-4?
Figure 2-4 a. | mantle | c. | upper
mantle | b. | earth’s crust | d. | core | | | | |
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17.
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Cougars are predators that often eat weakened or diseased animals. This is a
description of the _____ of cougars. a. | habitat | c. | niche | b. | community | d. | none of
these | | | | |
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18.
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The
organisms growing on the log in Figure 2-8 are ____?
Figure 2-8 a. | autotrophs | c. | producers | b. | decomposers | d. | carnivores | | | | |
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19.
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What
type of cycle is depicted in Figure 2-10?
Figure 2-10 a. | nitrogen | c. | carbon | b. | phosphorus | d. | water | | | | |
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20.
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Sea
stars live in saltwater ecosystems. Some species live in shallow tidal pools, while others live in
the deepest parts of the oceans. This is a description of the _____ of sea stars. a. | niche | c. | habitat | b. | community | d. | none of these | | | | |
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21.
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In
the energy pyramid shown in Figure 2-7, which level has the smallest number of
organisms?
Figure
2-7 a. | grass | c. | birds | b. | grasshoppers | d. | fox | | | | |
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22.
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What
type of ecosystem is shown in Figure 2-11?
Figure 2-11 a. | terrestrial | c. | acquatic | b. | abiotic | d. | population | | | | |
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