Pearson Ch. 3 Sec. 3 Symbiosis

Front

What is mutualism?

Back

A relationship between two organisms in which both organisms benefit.

Front

What is commensalism?

Back

A relationship between two organisms where one benefits and the other is neither helped nor harmed.

Front

What is parasitism?

Back

A relationship where one organism benefits at the expense of another, which is harmed.

Front

What is the role of a host in a parasitic relationship?

Back

The host is the organism that is harmed by the parasite.

Front

Give an example of mutualism.

Back

Honey guide birds and badgers; both benefit from finding and eating honey.

Front

Give an example of commensalism.

Back

Silverfish living with army ants; they share prey without affecting the ants.

Front

Give an example of parasitism.

Back

A mosquito biting a human; the mosquito benefits while the human is harmed.

Front

What is competition in ecology?

Back

A relationship where two organisms compete for the same resources.

Front

What is the difference between mutualism and commensalism?

Back

In mutualism, both organisms benefit; in commensalism, one benefits and the other is unaffected.

Front

What is an ecological niche?

Back

The role and position a species has in its environment, including all interactions.