UNH Biology 412 Final Exam Study Guide

The maximum number of individuals of a given population the environment can support is the environment's _____ for that population. A.carrying capacity B.effect on the intrinsic growth rate C.population size D.effect on the exponential growth rate - Answer- Carrying Capacity A severe drought is an example of a density-_____ factor that can influence population size. The availability of nest sites is an example of a density-_____ factor. A.dependent; independent B.independent; dependent C.dependent; dependent D.independent; independent - Answer- independent; dependent When a population is small relative to its carrying capacity, its growth will be: A.geometric. B.exponential. C.logistic. D.both geometric and exponential.E.both geometric and logistic. - Answer- exponential A scientist is studying a population of kangaroo rats in the southwestern deserts of the United States. For approximately 4 years the population remains at or near 125 individuals. In the fifth year, it falls to 30. This sharp decrease in population size is most likely the result of density-_____ factors. A.dependent B.independent - Answer- independent The term (ΔN/N0)/Δt (where N denotes the size of a population and t represents time) is used to calculate: A.a habitat's carrying capacity. B.the "available" percentage of a habitat's carrying capacity. C.a population's density. D.a population's specific growth rate. - Answer- a population's specific growth rate The common mud turtle experiences relatively uniform mortality rates throughout its life. It exhibits Type _____ survivorship. A.I B.II C.III - Answer- II ____ is the proportion of individuals of an initial cohort that survives to each successive age or stage of the life cycle. A.Survivorship B.Mortality