Chapter 8 Test Review # 1

Thick fur on deer is not an example of coevolution. Why?

• because thick fur is an adaptation

• because deer with thick fur live longer

• because thick fur evolved in response to a cold climate, not in response to other organisms

• because in the lowlands, where the climate was sunny and warm, deer that did not have thick fur became separated from other deer that did have thick fur

An example of a population is

• all trees in a forest.

• all maple trees in a forest.

• all plants in a forest.

• all animals in a forest.

The density of a population is

• the number of individuals born every year.

• the proportion of males and females.

• the number of individuals living in cities.

• the number of individuals per unit area.

Each of the following is an example of a parasite except

• a roundworm in a human’s intestine.

• a cow in a pasture.

• a tick on a cat.

• mistletoe on a tree.

The relationship between a Canadian lynx and a snowshoe hare is an example of

• parasite and host.

• predator and prey.

• competition.

• mutualism.

In which of the following relationships is neither species harmed?

• predation

• competition

• parasitism

• commensalism

Which of the following populations has a random dispersion?

• flock of flamingoes

• pine trees in a pine forest

• herd of bison

• solitary snakes in a desert

Which of the following would most likely cause a large number of density-independent deaths in a population?

• winter storms

• disease-carrying insects

• predators

• limited resources

Which of the following organisms has the highest reproductive potential?

• dogs

• elephants

• bacteria

• humans

A species of plant has exponential growth after it is introduced into an area where it has never lived. Which statement best describes exponential growth?

• Each individual plant grows much larger than usual.

• The population immediately decreases.

• Within a few years the population increases dramatically.

• The species’ reproductive potential declines.