Measuring Populations — Unit test Answers

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Bottleneck events are always caused by the death of most of a species’ population.

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Which of the following is most likely an example of genetic drift resulting from the founder effect?

The species’ physical habitat is limited.

The population expresses a mix of dominant and recessive traits.

The species occupies a small, specific niche.

A population commonly expresses traits that are otherwise rare in the species.

After hunting by European settlers, the bison population of 60 million was reduced to _______ of its original size.

1 : 60

1 : 600

1 : 6,000

1 : 60,000

Explain how the method of mark and recapture works to determine population size.

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Explain why random distribution patterns for species are the rarest in nature.

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Which of the following is not true about the distribution of species?

A species’ native range does not include areas where it was introduced by humans.

Some species have a range they inhabit only for breeding.

Seasonal ranges include areas where species are found for part of the year.

All the organisms in an ecosystem share distribution patterns.

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