Population Size — Unit test Answers

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The _______ is the total number of organisms that an ecosystem can support.

tolerance range

carrying capacity

competitive exclusion principle

population

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Which of the following statements about exponential growth curves is true?

Exponential growth curves are common for R-selected species.

Exponential growth curves show fast growth rates followed by slow growth rates.

No organisms in nature experience exponential growth rates.

Exponential growth curves are S-shaped.

A mutation that causes resistance in a population of beetles is an example of _______.

macroevolution

microevolution

migration

reproduction

Migration is _______.

the movement of organisms from a native location to a foreign location

the movement of organisms from a foreign location to a native location

the movement of organisms from their water supply to their food supply

the seasonal movement of organisms between locations

Which best describes the trophic level of an organism?

the number of calories it consumes

the amount of energy it produces

its life cycle from birth to death

its position in a food chain

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