Exam 42: Populations

An increase in rainfall brings more plant resources to a population of lizards,but it also brings more predators.These changes result in both an increase in fecundity and a decrease in survivorship.Under these conditions,which event is most likely?

Which statement about the rockfish Sebastes melanops is false?

Which statement about subpopulations within metapopulations is false?

Suppose the population density of a sample of a bagworm population is 45 per square meter.Assuming that the population is uniformly distributed,what would be the population size if the bagworms encompassed an area that was 1 km × 200 m?

Which observation best supports the argument that that human population of the Earth is still below its long-term carrying capacity?

The doubling time of a population of annual plants is 14 years.Assuming that the initial size of the population is 500 and that the rate of increase remains constant,how large will the population be after 42 years?

Eighty-one pocket gophers were present in Maddox Field at the start of 2006.During that year,24 individuals were born and 19 died.Twelve individuals immigrated and 10 emigrated.How many pocket gophers were present in Maddox Field at the start of 2007?

If a certain age interval in a population contains ten individuals and has a mortality rate of 1.00,how many individuals will be in the next older age interval?

Which is a major assumption of the BD model of population change?

The relationship between the rate at which kangaroo rats can harvest seeds and the seed density best illustrates

Use the following to answer questions : Refer to the figure below. -Under which conditions can both the rice weevil and the lesser grain borer persist indefinitely?

If the survivorship of a sample of geese is 0.75 for the month of March,what is the fecundity of this sample?

At the beginning of May,259 butterflies are found in a certain locality.During the month,45 butterflies emigrate,10 die,and 67 immigrate into the area.There are no butterfly births.What is the population size at the end of the month?

If a total of 2,400 oak trees are counted in a 6 km × 2 km rectangular patch of land,the density of the oak trees is _______ per square km.

Which factor would be most conducive to counting all of the individuals in a population instead of taking a sample?

In resource allocation,the needs of _______ generally must be taken care of before resources can be devoted to other activities.

The number of individuals in a population divided by the area that the population takes up is known as the _______ of the population.

What is the fundamental distinction between resources and physical conditions?