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Multiple Choice Quiz
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1

Population growth levels off due to
A)an increase in the average age of population members and a resultant lessening in reproduction.
B)competition for shelter, food, light or other factors.
C)an increase in emigration from the population.
D)higher incidence of lethal mutations.
E)both a and c
2

Most natural populations exhibit ________ growth.
A)exponential
B)varied
C)seasonal
D)logistic
E)checked
3

A characteristic of K selected populations is
A)long lifespan and the production of a few offspring.
B)reproduction at an early age and little or no parental care.
C)a long maturation time and a high mortality rate.
D)reproducing (usually) only once and slow maturation.
E)a high mortality rate.
4

Survivorship curve:
A)a group of individuals of the same age
B)the number of offspring in a standard time
C)percentage of an original population to survive to a given age
D)often influenced by number of females in a population
5

Cohort:
A)a group of individuals of the same age
B)the number of offspring in a standard time
C)percentage of an original population to survive to a given age
D)often influenced by number of females in a population
6

Sex ratio:
A)a group of individuals of the same age
B)the number of offspring in a standard time
C)percentage of an original population to survive to a given age
D)often influenced by number of females in a population
7

Fecundity:
A)a group of individuals of the same age
B)the number of offspring in a standard time
C)percentage of an original population to survive to a given age
D)often influenced by number of females in a population
8

Communities represent a group of species that have interacted and evolved together over long periods of time.
A)true
B)false
9

Communities exist in a particular place because the ranges of its species overlap in that place.
A)true
B)false
10

A fundamental niche is
A)defined as the way in which an organism uses its environment.
B)the niche an organism is theoretically capable of using.
C)the niche an organism uses in the presence of competitors.
D)the basic and minimal requirements for survival of a species.
E)none of the above
11

A niche is described as
A)the space an organism occupies.
B)the food an organism consumes.
C)an organisms moisture requirements.
D)the temperature at which an organism can survive.
E)all of the above
12

Gauss's principle states that two species cannot occupy the same area indefinitely.
A)true
B)false
13

Extinction is the inevitable conclusion of two species indefinitely occupying the same niche.
A)true
B)false
14

Symbiosis, or two living together, is seldom seen in nature.
A)true
B)false
15

In commensalism one species benefits at the expense of the other species.
A)true
B)false
16

Which of the following is an example of commensalism?
A)A tapeworm living in the gut of its host.
B)A bird feeding on insects on the back of a large herbivore.
C)A lichen.
D)Ants living on a plant.
E)All of the above are examples of commensalism.
17

Ants living on Acacia plants ______ which they use as their primary source of food.
A)honeydew
B)nectar
C)cellulose
D)Beltian bodies
E)starch
18

Plants that have evolved secondary compounds to protect themselves from herbivores
A)will not be consumed by any species of organism and will have a competitive advantage over other plants.
B)are often the exclusive food for some species that has adapted to break down the secondary compound.
C)are rare in nature.
D)both a and b are true
E)both b and c are true
19

Predation reduces competition in a community by
A)reducing the number of species living there.
B)stimulating the production of more offspring to ensure the survival of the prey species.
C)reducing the number of individuals competing for resources.
D)interacting with several species in the community.
E)all of the above
20

As the number of individuals of the prey species increases the predator population
A)decreases.
B)increases.
C)stabilizes.
D)evolves.
E)none of the above
21

In order for mimicry to be effective in protecting a species from predation it must be
A)rare relative to the model species.
B)common in several insect species in the area.
C)based on the production of an unpleasant tasting substance.
D)based on production of a toxic substance.
E)counteracted by production of sufficient offspring to offset those that consumed.
22

Tolerance:
A)a species is able to survive in less than favorable conditions
B)changes in the habitat create unfavorable conditions for another species
C)one species creates changes in the habitat that favor another species
23

Facilitation:
A)a species is able to survive in less than favorable conditions
B)changes in the habitat create unfavorable conditions for another species
C)one species creates changes in the habitat that favor another species
24

Inhibition:
A)a species is able to survive in less than favorable conditions
B)changes in the habitat create unfavorable conditions for another species
C)one species creates changes in the habitat that favor another species
25

Population dispersion may be
A)uniform.
B)clumped.
C)random.
D)all of the above
E)a and b only
26

The rapid growth of bacteria that occurs after inoculation into agar in a petri plate is called a(n)
A)bloom.
B)lawn.
C)exponential growth.
D)accelerated growth.
E)activated growth.
27

A rise in the incidence of tuberculosis in crowded prisons is an example of a(n)
A)survivorship effect.
B)density-dependent effect.
C)dispersion effect.
D)limiting factor.
E)density-independent effect.
28

The age distribution of a population influences
A)the carrying capacity.
B)survivorship curve.
C)intrinsic rate of increase.
D)dispersion.
E)emigration of individuals.
29

In order to protect themselves from herbivores, plants may
A)contain toxic substances.
B)contain unpleasant tasting substances.
C)have thorns.
D)have spines.
E)all of the above
30

Lichens are an example of
A)parasitism.
B)commensalism.
C)mutualism.
D)synergism.
E)none of the above
31

Bees that pollinate flowers are an example of
A)parasitism.
B)commensalism.
C)mutualism.
D)synergism.
E)none of the above
32

Aphids living on roses are an example of
A)parasitism.
B)commensalism.
C)mutualism.
D)synergism.
E)none of the above
33

Brightly colored poison dart frogs are an example of
A)cryptic coloration.
B)aposematic coloration.
C)Batesian mimicry.
D)Müllerian mimicry.
E)none of the above
34

The monarch butterfly is an example of
A)cryptic coloration.
B)aposematic coloration.
C)Batesian mimicry.
D)Müllerian mimicry.
E)none of the above
35

Tomato worms are exactly the same color as the plants that they feed on. This is an example of
A)cryptic coloration.
B)aposematic coloration.
C)Batesian mimicry.
D)Müllerian mimicry.
E)none of the above
36

Lichens growing on the surface of rocks provide an example of
A)Batesian mimicry.
B)primary succession.
C)secondary succession.
D)a climax community.
E)a keystone species.
37

The growth that occurs after a forest fire has occurred is an example of
A)regrowth.
B)primary succession.
C)secondary succession.
D)a climax community.
E)keystone speciation.





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