APES Ch 6 quiz

Population distribution is

• often clumped in response to predation

• used by wildlife managers when regulating hunting and fishing

• measured relative to other species

• uniform in most tree species.

Which is true about a population's carrying capacity?

• It is denoted as C

• It is usually used when studying ecosystems

• it depends on a limiting resource

• it is controlled by density independent factors

Which population is typically regulated by density independent factors.

• algae

• predators

• paramecium bacteria

• birds

Which does NOT have a significant effect on the number of offspring produced by a population?

• Population distribution

• sex ratio

• age structure

• population size

The intrinsic growth rate of a population

• occurs at the populations's carrying capacity.

• depends on the limiting resources of the population

• increases as the population size increases

• only occurs under ideal conditions

Population growth using the exponential growth model

• increases at a constant rate.

• applies to most populations only after a long time.

• has an increasing intrinsic growth rate.

• represents ideal conditions that rarely occur in natural populations.

An r-selected species characteristically has?

• a type I survivorship curve

• few offspring

• a population near carrying capacity

• a fast population growth rate

Which is true of a population overshoot?

• It occurs when reproduction quickly responds to changes in food supply.

• It is followed by a die off

• It is most likely to be experienced by K-selected species.

• It occurs when a species stops growing after reaching the carrying capacity.

Inbreeding depression

• rarely occurs in highly connected metapopulations

• results from the creation of corridors between populations

• results in increased rates of reproduction

• rarely occurs in K-selected species.

Resource partitioning

• occurs in mutations

• can occur through morphological differences between competing species.

• can cause the extinction of competing species.

• is not the result of behavioral changes.