Chapter 40

Most commonly, individuals of a population show a __________ distribution through their habitat. a. clumped b. random c. nearly uniform d. none of the above

The rate at which population size 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

Suppose 200 fish are marked and released in a pond. The following week, 200 fish are caught and 100 of them have marks. There are about __________ fish in this pond. a. 200 b. 300 c. 400 d. 2,000

A population of worms is growing exponentially in a compost heap. Thirty days ago there were 400 worms and now there are \(800 .\) How many worms will there be thirty days from now, assuming conditions remain constant? a. 1,200 b. 1,600 c. 3,200 d. 6,400

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

__________ is a density-independent factor that influences population growth. a. Resource competition b. Infectious disease c. Predation d. Harsh weather

A life history pattern for a population is a set of adaptations that influence the individual's __________. a. longevity b. fertility c. age at reproductive maturity d. all of the above

The human population is now over 6.6 billion. It was about half that in __________. a. 2004 b. 1960 c. 1802 d. 1350

Compared to the less developed countries, the highly developed ones have a higher __________. a. death rate b. birth rate c. total fertility rate d. resource consumption rate

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 \(\mathrm{J}\) -shaped curve e. essential resource that restricts population growth when scarce