Environmental Science 3rd Benchmark Review

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

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.

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

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.

The number of wild horses per square kilometer in a prairie is the horse populations

• density.

• dispersion.

• size.

• birth rate.

A female dog’s niche includes all of the following except

• fleas that infest the dog.

• the number of puppies the dog has.

• how the dog protects its owners.

• the neighbor’s enclosed yard.

Which of the following has the greatest effect on reproductive potential?

• producing more offspring at a time

• reproducing more often

• having a longer life span

• reproducing earlier in life

A true statement about parasitism is that parasites

• may cause their hosts to become more vulnerable to predators.

• do not live on or in their hosts’ bodies.

• are always animals and never plants.

• immediately kill their hosts.

Which of the following is not an example of exponential growth?

• rabbit populations after being introduced to Australia

• reindeer of the Pribilof Islands after eating most of the lichens

• a bank account that earns interest

• mold appearing on bread overnight