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APES EXAM MULTIPLE CHOICE
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APES EXAM MULTIPLE CHOICE
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APES EXAM MULTIPLE CHOICEAll of the populations of organisms within a given area make up a
A. ecosystem
B. community
C. trophic level
D. biosphere
E. genus - Answers -B
What is one reason for an even distribution pattern among a particular species in a
community?
A. The species forms hierarchal social groups.
B. The species is breeding.
C. Resources are not limiting.
D. Members of the species mate for life.
E. The species is territorial. - Answers -E
Which does not describe patterns of population growth?
A. Populations can grow without restraint as long as resources are not limiting.
B. The size of some populations tends to remain relatively constant over time.
C. In some populations size fluctuates in a cyclical pattern.
D. Population size may not vary sporadically in response to environmental changes.
E. Population size is not affected by other populations. - Answers -E
The intrinsic growth rate of a population
A. is the number of yearly births in a population.
B. is the number of yearly births minus the number of yearly deaths in a population.
,C. is the minimum number of births likely to occur in a population under ideal
circumstances.
D. is the maximum potential for growth in a population under ideal conditions.
E. is the maximum potential for growth in a population given limited resources. -
Answers -D
Which factor is not typically density-dependent in an animal population?
A. nesting sites
B. food
C. water
D. shelter from cold
E. severe storms - Answers -E
An exotic species is one which (??) an ecosystem.
A. is rare in
B. is foreign to
C. does not interact with the other species in
D. is the most dominant species in
E. destroys - Answers -B
Two species of buttercup can be found in the same field in South Dakota. One species
flowers in early spring, and the other species flowers in late summer. Both are pollinated
by the same insect species. The different flowering times are an example of
A. competitive exclusion
B. mutualism
C. symbiosis
D. resource partitioning
E. parasitism - Answers -D
,When an insect eats the lettuce seedlings in your yard, its is engaging in
A. parasitism
B. ecosystem engineering
C. mutualism
D. commensalism
E. herbivory - Answers -E
A brightly colored insect that is poisonous to predators is using
A. chemical defenses only
B. morphological defenses only
C. behavioral defenses only
D. morphological and chemical defenses
E. behavioral and chemical defenses - Answers -D
The roots of many plants are infected with specialized fungus. The plant supplies
carbon to the fungus and the fungus supplies nutrients to the plant. How can this
relationship be classified?
A. mutualistic
B. commensalistic
C. parasitic
D. successional
E. competitive - Answers -A
A species that plays a major role in determining the structure of its ecological
community is
A. a predator
B. a mutualistic species
C. the most abundant species
, D. a keystone species
E. an herbivore - Answers -D
Which of the following is not true of the general pattern of succession, from a recently
disturbed terrestrial site to stable, self0sustaining forest community?
A. a decrease in the number of grass species occurs.
B. shade-loving tree species become dominant in the climax community.
C. Pioneer species give way to perennial, long-lived species.
D. Carbon that is involved in photosynthesis increases.
E. Total biomass tends to decrease. - Answers -E
(??) succession begins on bare rock after glaciers have passed, or on newly formed
volcanic islands.
A. primary
B. secondary
C. climax
D. pioneer
E. tertiary - Answers -A
The first plant community that forms on the bare rock often includes organisms such as
A. herbs and conifers
B. grasses and weeds
C. broad-leaf trees and conifers
D. lichens and mosses
E. woods shrubs and conifers - Answers -D
The crude birth rate of a population is expressed as a
A. decimal
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