Exam 8: Properties of Populations

Which of the following is not a feature of a population?

Calculate the estimated population size,N,given a study that initially marked 100 animals and subsequently captured 50,of which 25 were marked.

The age of a fish can be determined by counting the annual rings of otoliths (ear bones).

The most common spatial distribution among individuals within a population is clumped.

The sex ratio in a population is usually fixed and does not vary among age classes.

An individual tree or plant produced by sexual reproduction and thus arising from a zygote is a genetic individual,known as a(n)________.

A quadrat is usually used to measure density in mobile populations of animals.

Which of the following is a clonal animal?

The California newt is found only in California.This is an example of a(n)________ species.

You see three shoots of a plant with a connected root system.This is an example of

If,via global warming,the temperatures increased in Canada,the red maple might be able to extend its ________ to the North.

Why might the sex ratio of bird species in the figure change from as they grow from juveniles to adults?

A uniform distribution of individuals within a population occurs if each individual's position is independent of others' positions.

As a result of environmental heterogeneity,most populations are divided into smaller populations,referred to as local ________.

________ defines the size of a population,the number of individuals in it.

If more individuals move out of a forest than into it every year,the ________ rate is high.

The density of a population is usually measured by counting every individual.

Which of the following countries have an age structure that most resembles a pyramid?

In most mammalian populations,the ________ sex ratio at birth is often weighted toward males.

Unlike the one-way movement of an individual in emigration and immigration,migration refers to round-trip movements.