Chapter 39

The rate at which a population grows or declines depends on the rate of ____________. a. births b. deaths c. immigration d. emigration e. a and b f. all of the above

Populations grow exponentially when __________. a. population size expands by ever increasing increments through successive time intervals b. size of low-density population increases slowly, then quickly, then levels off once carrying capacity is reached c. a and b are characteristics of exponential growth

For a given species, the maximum rate of increase per individual under ideal conditions is its ________. a. biotic potential b. carrying capacity c. environmental resistance d. density control

Resource competition, disease, and predation are ___________ controls on population growth rates. a. density-independent b. population-sustaining c. age-specific d. density-dependent

A life history pattern for a population is a set of adaptations that influence the individual's a. survival b. fertility c. age when it starts reproducing d. all of the above

Match each term with its most suitable description. _______carrying capacity _______exponential growth _______biotic potential _______limiting factor _______logistic growth a. maximum rate of increase per individual under ideal conditions b. population growth plots out as an S-shaped curve c. maximum number of individuals sustainable by the resources in a given environment d. population growth plots out as a J-shaped curve e. essential resource that restricts population growth when scarce