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Biology Quiz: Intoduction To Ecology! 24

Biology Quiz: Intoduction To Ecology! 24

Biology Quiz: Intoduction To Ecology!

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Quiz Questions And Answers

Which of the following is an example of aposematic coloration?

Eye color in humans
Green color of a plant
Colors of an insect-pollinated flower
Stripes of a skunk

Which of the following are important biotic factors that can affect the structure and organization of biological communities?

Precipitation, wind
Temperature, water
Nutrient availability, soil pH
Predation, competition

Which of the following would be most likely to exhibit uniform dispersion?

dwarf mistletoes, which parasitize particular species of forest trees
Lake trout, which seek out deep water
Cattails, which grow primarily at edges of lakes and streams
Red squirrels, which hide food and actively defend territories

If you were to keep records on a cohort of wild animals for the purpose of developing a life table, you would be most successful if you chose to keep records on

Wolves in a national park
Earthworms in a backyard
pelagic squid (pelagic = living throughout the open ocean)
Migratory birds

Which of the following is an incorrect statement about the regulation of populations?

Density-independent factors have an increasingly greater effect as a population's density increases
High densities in a population may cause physiological changes that inhibit reproduction
The effect of density dependent factors is more predictable than the effect of density-independent factors
If you were to keep records on a cohort of wild animals for the purpose of developing a life table, you would be most su

Logistic growth of a population is represented by

Density-independent factors have an increasingly greater effect as a population's density increases
dN/dt = rN [(K-N)/K]
High densities in a population may cause physiological changes that inhibit reproduction
If you were to keep records on a cohort of wild animals for the purpose of developing a life table, you would be most su

As N approaches K for a certain population, which of the following is predicted by the logistic equation?

The carrying capacity of the environment will increase
The population will increase exponentially
The population will crash
The growth rate will slow and approach zero

Which of the following is an example of an intrinsic density dependent factor that can act to regulate population growth?

Food availability
Intraspecific aggression
toxin accumulation
An increase in predation rates as prey density increases

A group of individuals born at the same time is known as a

Cohort
Subpopulation
Subspecies

A demographer studying a population of a particular organism would be least likely to be engaged in which of the following?

constructing a life table for the organism
Estimating how long an individual of a given age will live
Measuring birth and death rates
Studying predatory behaviour
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