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Populations

Test Description: After a study of populations in a biology class, these are the terms you should know!

Instructions: Answer all questions to get your test result.

1) When the birthrate equals the deathrate, the population

Agradually increases Bgradually decreases Cbecomes unstable Dreaches zero growth

2) Each of the following is a density-dependent limiting factor except

Apredation Bparasitism Cweather Dcrowding

3) After rabbits were introduced into Australia, the rabbit population went into exponential growth because rabbits had no natural

Aprey Bparasites Cpredators Dsymbionts

4) A frost that kills insects that feed on a plant is

Adependent on population density Bnot a limiting factor Cindependent of population density Da behavioral factor

5) A symbiotic relationship between barnacles and whales is an example of

Amutualism Bparasitism Ccommensalism Dpredation

6) An example of a population is

AUrsus americanus in Pennsylvania Bthe number of different species of Felis in a geographic area Call the fish in Lake Erie Dthe number of maples, white oaks, spruce, gray squirrels, and owls in the forest

7) When a species has reached a steady state, it has reached a particular environment's

Alogistic capacity Bexponential capacity Ccarrying capacity Decological capacity

8) In a logistic curve, the initial growth

Ais very rapid Bis very slow Cslows steadily Dis exponential

9) In most natural situations, predator-prey relationships

Adestroy one another Bcannot coexist Care out of balance Dcoexist for a long time

10) In a logistic growth curve, exponential growth is the phase in which the population

Agrowth begins to slow down Bgrowth stops Cgrows quickly and few animals are dying Dreaches carrying capacity

*select an answer for all questions

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