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1.
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The European red squirrel population is declining due to competition with the
North American gray squirrel. Most likely, what will eventually happen to the red squirrel?
a. | It will win its competition with the gray squirrel. | b. | It will be an
ecological equivalent of the gray squirrel. | c. | It will become extinct. | d. | It will move to a
different community. |
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2.
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What word of phrase would be most appropriate opposite
“Commensalism” under “Organism 2”?  a. | Neither Harms or Benefits | b. | Is Harmed | c. | Benefits | d. | Benefits over
Time |
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3.
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The white-tailed deer and the kangaroo are both large herbivorous mammals that
occupy similar niches but live on different continents. They are an example of
a. | ecological equivalents. | b. | competitors. | c. | niche
partitioning. | d. | competitive exclusion. |
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4.
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A herd of caribou has more births than deaths and more immigration than
emigration. What will most likely happen to the size of the herd?
a. | It will increase. | b. | It will decrease. | c. | It will increase,
and then decrease. | d. | It will stay the
same. |
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5.
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In 1988 several large forest fires occurred in Yellowstone National Park. What
process occurred after these fires?
a. | primary succession | b. | secondary succession | c. | pioneer
succession | d. | symbiotic succession |
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6.
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Which statement is most likely true about the Daphnia population shown in the
graph?  a. | It has reached its carrying capacity. | b. | It has a large food supply. | c. | It has a small food
supply. | d. | It will level off during day 8. |
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7.
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Lions eat zebras. Zebras are part of the lion's
a. | biotic factors. | b. | ecological niche. | c. | local
habitat. | d. | abiotic conditions. |
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8.
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Parasitism is most similar to
a. | interspecific competition. | b. | mutualism. | c. | commensalism. | d. | predation. |
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9.
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Fourteen beavers live in a pond with an area of 2 square kilometers. What is the
population density of the beavers?
a. | 7 beavers per square kilometer | b. | 14 beavers per square
kilometer | c. | 16 beavers per square kilometer | d. | 28 beavers per square
kilometer |
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10.
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An alder tree is not a pioneer species because
a. | alder trees are a form of lichen. | b. | it is not one of the trees that make up the
final forest. | c. | smaller organisms come before trees in succession. | d. | pioneer species are
always animals. |
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11.
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Which of these is a density-independent limiting factor?
a. | any increase in population | b. | the introduction of a
parasite | c. | a decrease in predators | d. | an earthquake |
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12.
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The new island of Surtsey was formed near Iceland by a series of volcanic
eruptions. Which of these processes occurred first on Surtsey?
a. | A complex ecosystem developed. | b. | Volcanic rock broke down into
soil. | c. | Plants grew on the island. | d. | Animals moved onto the
island. |
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13.
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Many endoparasites lack complex digestive systems. Which is the most likely
reason for this?
a. | Endoparasites eat only plants, which are easy to digest. | b. | Endoparasites do not
usually kill their hosts. | c. | Endoparasites feed on food already digested by
the host. | d. | Endoparasites live only inside their hosts, not
outside. |
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14.
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What might happen if an organism with type III survivorship were introduced into
a new environment with no predators?
a. | It would become extinct. | b. | Its survivorship would change to type
I. | c. | Its population would increase rapidly. | d. | Its birth rate would
decrease. |
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15.
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Bobcats are generally solitary and establish territories of a certain size where
they hunt for food. What type of population dispersion would you expect bobcats to have?
a. | clumped dispersion | b. | uniform dispersion | c. | random
dispersion | d. | competitive dispersion |
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