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CLEP Biology Practice Test
Multiple Choice
CLEP Biology
Multiple Choice Practice Test
Question 1 of 3
58% Get this Question Right
Rhizobium is a bacterium that lives in the root nodules of leguminous plants. This is an example of
A
Mutualism
B
Parasitism
C
Commensalism
D
Predatism
E
None of these
Mutualism is an association between organisms in which both organisms are benefited. Rhizobium lives in the root of legumes and forms nodule. Rhizobium helps to fix atmospheric nitrogen in leguminous plants. Commensalism is a type of association in which one organism benefits and the other is unaffected. Parasitism is a type of association in which one organism is benefited (parasite) and the other (host) is adversely affected. Predatism is a state of preying on other organisms.
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