When both organisms live together and one organism benefits at the expense of the host, this is parasitism.When both organisms live together and both benefit, this is symbiosis.When both organisms live together and neither benefits, this is commensalism.Mutualism and symbiosis are synonyms.

Solved

Parasitism Is A

Question 20

Multiple Choice

Parasitism is a:

A) biologic relationship between two or more organisms in which both benefit from one another.
B) biologic relationship between only two organisms in which there are no beneficial or harmful effects to the host.
C) biologic relationship in which one species gains benefits at the expense of the host.
D) synonym for mutualism.

Correct Answer: