Honors Bio Unit3 Quiz Compet., Carrying Cap., and Invasive Spec.

Organize these images based on the type of competition

Groups:

(a) intraspecific competition

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(b) interspecific competition

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Competition is the fiercest between members of​ (a)   species.

• the same
• differing

What is the correct formula for finding population density?

• Total number of organisms / Total land area

• Total population + Total land area
• Total population x Total land area

• Total population - Total land area

An ecologist surveyed 50 square kilometers of land and calculated that 200 zebras searched for food in that area. What is the population density of zebra in the area surveyed by the ecologist?

Mathematical Equivalence

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What can happen if a population of organisms grows beyond the carrying capacity?

• resources in a particular ecosystem can be depleted

• there would not be any impact on an ecosystem

• resources in a particular ecosystem can be increased

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Density dependent limiting factors are ...

• related to how many organisms are in an area

• affect all organisms no matter how closely the organisms live to one another

• human changes to an ecosystem

• number of organisms per unit of area

Organize these Limiting Factors into the correct categories

Groups:

(a) Density Dependent

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(b) Density Independent

• weather

• food availability

• predation

• disease

• temperature

• pollution

• fire

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Match the following types of species:

• brought by humans from another ecosystem

• extirpated

• naturally lives in an ecosystem

• introduced (non-native)

• local extinction of a species

• extinct

• no longer in existence, anywhere

• native

What is an invasive species?

• organism from another ecosystem that causes damage to the new ecosystem

• a species that keeps an ecosystem in balance

• an organism that naturally lives in an ecosystem

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