Chapter Eight Science Test.

Each of the following is an example of parasite except...

A cow in a pasture.

An example of a population is...

All maple trees in a forest.

The relationship between acacia trees and the ants that live on them is an example of...

Mutualism.

A population has a ________ growth rate when the death rate is higher than the birth rate.

Negative

A species' ________ includes the species physical home, the environmental factors necessary for that species survival, and all its interactions with other organisms.

Niche

Which of the following is one of the main properties used to describe a population?

Number of individuals.

A ________ usually on weakens its host, while a ________ usually kills its prey.

Parasite;Predator

The type of interaction between cats and mice is ________.

Predation

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

Predator & Prey.

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

Reindeer of the Pribilof Islands after eating most of the lichens.

If over a long period of time, each pair of adults in a population had only two offspring and the offspring lived to reproduce, the population would...

Remain the same.

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

Reproducing earlier in life.

The maximum number of offspring that each memeber of a population can produce is the population's ________.

Reproductive Potential

Niche ________ is when each species uses less of the niche than it is capable of using, in order to reduce competition for resources with other species.

Restriction

The three main properties used to describe population are ________, ________, and ________.

Size, Density, & Dispersion

Which of the following populations has a random dispersion?

Solitary snakes in a desert.

The carrying capacity of an environment for a particular species at a particular time is determined by the...

Supply of the most limited resource.

A relationship in which two organisms live in close association, such as mutualism and commensalism is called ________.

Symbiosis

Which of the following statements is not correct?

Symbiosis is a relationship in which two organisms live apart.

Members of a species compete indirectly for resources by competing for an ________ and social dominance.

Territory

Which of the following reproductive situations will limit a population's biotic potential?

The maximum number of offspring each individual can produce.

A female dog's niche includes all of the following excpet...

The neighbor's enclosed yard.

The density of a population is...

The numbe rof individuals per unit area.

Which of the following statements explains why the growth of orchids on the high brances of tropical trees is an example of commensalism?

The trees are neither benefited nor harmed.

The difference between a predator and a parasite is that a predator...

Usually kills and eats its prey.

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

Winter Storms.

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

Within a few years the population increases dramatically.

Which of the following statements is correct?

An organism's habitat is a location.

Which of the following organisms has the highest reproductive potential?

Bacteria.

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

Because thick fur evolved in response to a cold climate, not in response to other organisms.

Competition for food cannot occur...

Between animals from two different ecosystems.

A population's growth rate is its ________ state minus its ________ state.

Birth;Death

The ________ of an ecosystem for a particular species is the maximum population that the ecosystem can support indefinitely.

Carrying Capacity

Over a long period of time, two species can develop adaptations that increase the benegit of their relationship in the process of ________.

Coevolution

A robin that does not affect the tree in which it nests is an example of ________.

Commensalism

In which of the following relationships is neither species harmed?

Commensalism

A type of interaction between two species in which both species is harmed is ________.

Competition

A population's ________ is the number of its members per unit area or per volume.

Density

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

Density.

The average age at which memebers of a species reproduce is that species ________.

Generations

If two species use the same food source at different times, they are ________ competitors.

Indirect

Unlike a predator in relation to its prey, a parasite usually does not ________ its host.

Kill

The amount of food avaliable for wolves in an area determines the ecosystem's carrying capacity for wolves and is an ________ resource for wolves.

Limiting

A true statement about parasitism is that parasites...

May cause their hosts to become more vulnerable to predators.

The organisms in a cow's stomach have a constant source of food; the organisms help the cow break down and use the grass it eats. This type of relationship is known as ________.

Mutualism