Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Thick fur on deer is not an example of coevolution. Why?
a. | because thick fur is an adaptation | b. | because deer with thick fur live
longer | c. | because thick fur evolved in response to a cold climate, not in response to other
organisms | d. | because in the lowlands, where the climate was sunny and warm, deer that did not have
thick fur became separated from other deer that did have thick fur |
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2.
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An example of a population is
a. | all trees in a forest. | c. | all plants in a forest. | b. | all maple trees in a
forest. | d. | all animals in a
forest. |
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3.
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The density of a population is
a. | the number of individuals born every year. | b. | the proportion of
males and females. | c. | the number of individuals living in
cities. | d. | the number of individuals per unit area. |
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4.
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Each of the following is an example of a parasite except
a. | a roundworm in a human’s intestine. | c. | a tick on a
cat. | b. | a cow in a pasture. | d. | mistletoe on a tree. |
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5.
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The relationship between a Canadian lynx and a snowshoe hare is an example
of
a. | parasite and host. | c. | competition. | b. | predator and prey. | d. | mutualism. |
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6.
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In which of the following relationships is neither species harmed?
a. | predation | c. | parasitism | b. | competition | d. | commensalism |
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7.
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Which of the following populations has a random dispersion?
a. | flock of flamingoes | c. | herd of bison | b. | pine trees in a pine forest | d. | solitary snakes in a
desert |
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8.
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Which of the following would most likely cause a large number of
density-independent deaths in a population?
a. | winter storms | c. | predators | b. | disease-carrying insects | d. | limited
resources |
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9.
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Which of the following organisms has the highest reproductive potential?
a. | dogs | c. | bacteria | b. | elephants | d. | humans |
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10.
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A species of plant has exponential growth after it is introduced into an area
where it has never lived. Which statement best describes exponential growth?
a. | Each individual plant grows much larger than usual. | b. | The population
immediately decreases. | c. | Within a few years the population increases
dramatically. | d. | The species’ reproductive potential declines. |
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11.
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The relationship between acacia trees and the ants that live on them is an
example of
a. | commensalism. | c. | parasitism. | b. | mutualism. | d. | predation. |
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12.
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The number of wild horses per square kilometer in a prairie is the horse
populations
a. | density. | c. | size. | b. | dispersion. | d. | birth rate. |
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13.
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A female dog’s niche includes all of the following except
a. | fleas that infest the dog. | c. | how the dog protects its
owners. | b. | the number of puppies the dog has. | d. | the neighbor’s enclosed
yard. |
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14.
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If over a long period of time, each pair of adults in a population had only two
offspring and the offspring lived to reproduce, the population would
a. | grow. | c. | remain the same. | b. | shrink. | d. | disperse
randomly. |
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15.
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Which of the following has the greatest effect on reproductive potential?
a. | producing more offspring at a time | c. | having a longer life
span | b. | reproducing more often | d. | reproducing earlier in life |
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16.
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A true statement about parasitism is that parasites
a. | may cause their hosts to become more vulnerable to predators. | b. | do not live on or in
their hosts’ bodies. | c. | are always animals and never
plants. | d. | immediately kill their hosts. |
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17.
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Which of the following is not an example of exponential growth?
a. | rabbit populations after being introduced to Australia | b. | reindeer of the
Pribilof Islands after eating most of the lichens | c. | a bank account that earns
interest | d. | mold appearing on bread overnight |
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18.
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The carrying capacity of an environment for a particular species at a particular
time is determined by the
a. | number of individuals in the species. | c. | reproductive potential of the
species. | b. | distribution of the population. | d. | supply of the most limited
resources. |
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19.
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Which of the following statements explains why the growth of orchids on the high
branches of tropical trees is an example of commensalism?
a. | The orchids draw nourishment from the trees. | b. | The trees are
neither benefited nor harmed. | c. | The orchids keep parasites
away. | d. | The trees receive nutrients from the orchids. |
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20.
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Which of the following statements is not correct?
a. | Mutualism is a type of symbiosis. | b. | Yucca moths and yucca plants have a symbiotic
relationship. | c. | Symbiosis is a relationship in which two organisms live apart. | d. | Coyotes and foxes
are competitors because they feed on the same kinds of animals. |
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21.
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Which of the following is one of the main properties used to describe a
population?
a. | number of individuals | c. | number of species | b. | color of individuals | d. | kind of
adaptations |
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22.
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Which of the following statements is correct?
a. | An organism’s niche is only the part of its habitat that it
eats. | b. | An organism’s habitat is a location. | c. | Habitat and niche
are the same thing. | d. | An organism’s niche is outside its
habitat. |
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23.
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Competition for food cannot occur
a. | between two populations. | b. | among members of the same
population. | c. | among populations whose niches overlap. | d. | between animals from
two different ecosystems. |
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24.
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Which of the following reproductive situations will limit a population’s
biotic potential?
a. | the minimum number of offspring each pair can produce | b. | the maximum number
of offspring each individual can produce | c. | the number of interactions each individual
has | d. | the size of offspring each individual can produce |
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25.
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The difference between a predator and a parasite is that a predator
a. | usually kills and eats its prey. | c. | lives in or on a
host. | b. | benefits from another organism. | d. | harms another
organism. |
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