Relationships Between Organisms in a Habitat

A close relationship between two species in which BOTH organisms benefit

• mutualism

• commensalism

• parasitism

• predator prey

A close relationship in which ONE organism benefits and the other organism is not affected

• mutualism

• commensalism

• parasitism

• predator prey

A relationship between two organisms in which one organism benefits and the other is harmed

• mutualism

• commensalism

• parasitism

• predator prey

When one organism hunts down another organism for food

• mutualism

• commensalism

• parasitism

• predator prey

When organisms fight for the same resources

• competition

• symbiosis

• mutualism

• commensalism

This is the process of gradual, natural change and species replacement that takes place in communities of an ecosystem over time.

• Tolerance

• Cycling

• Succession

• Symbiosis

A Starfish live in saltwater ecosystems. Some species live in shallow tidal pools, while others live in the deepest parts of the oceans. This a description of the ____________ of starfish

• habitat

• niche

• community

• population

An organism's particular role in its habitat, or how it makes its living, is called its ___________.

• A. Niche

• B. Competition

• C. Carrying capacity

• D. Ecosystem

The Escherichia coli that live in your intestine and help break down food are an example of which type of interaction?

• predation

• mutualism

• competition

• parasitism

An organism's habitat must provide all of the following EXCEPT ______________.

• Water

• Predators

• Food

• Shelter