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APES EXAM MULTIPLE CHOICE || ALL ANSWERS ARE CORRECT 100%.
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All of the populations of organisms within a given area make up a A. ecosystem B. community C. trophic level D. biosphere E. genus correct answers B What is one reason for an even distribution pattern among a particular species in a community? A. The species forms hierarchal so...

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  • September 25, 2024
  • 37
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • all of the populations of organisms within a given

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APES EXAM MULTIPLE CHOICE || ALL ANSWERS ARE
CORRECT 100%.
All of the populations of organisms within a given area make up a

A. ecosystem

B. community

C. trophic level

D. biosphere

E. genus correct 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. correct 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. correct 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. correct 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 correct 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 correct answers B

Which does not cause rapid growth in a population?

A. elimination of a pollutant

B. elimination of predators

C. increase in food supply

D. introduction of a new parasite

E. introduction into a new habitat correct answers D

During a single Oregon winter, minimum temperatures did not get much below freezing. The
following summer, large mosquito populations were observed in ponds. Cold weather came early

,the next winter and most ponds froze for 3 months. The following summer, very low mosquito
populations were observed. What best explains this pattern in the mosquito population?

A. a density independent factor

B. a density dependent factor

C. the ecosystem's carrying capacity

D. a limiting resource

E. global warming correct answers A

A laboratory experiment followed the growth of a flour beetle population over time. At first the
population increased dramatically but later growth slowed and the population size leveled off.
While food (the wheat flour in which they live) was abundant, the flour beetles began to eat their
own eggs when densities got high. What might we hypothesize about this behavior in the four
beetles?

A. It has no effect on the growth of the population, because food scarcity is the limiting factor.

B. It is intended to change the carrying capacity of the environment.

C. It serves as a density-dependent means of population control.

D. It serves as a density-independent means of population control.

E. It serves as a way of regulating age structure in the population. correct answers C

Which is not a type of interspecific interaction?

A. symbiosis

B. predation

C. competition

D. speciation

E. mutualism correct answers D

A biologist who studies interactions at the community level investigates interactions between

A. organisms of one species

B. populations of more than one species

, C. animals of one species

D. social animals

E. ecosystems correct 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 correct 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 correct 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 correct answers D

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