Question

Select the statement which explains best parasitism.
(a) One organism is benefited.
(b) Both the organisms are benefited.
(c) One organism is benefited, other is not affected.
(d) One organism is benefited, other is affected.

Answer 1

Parasitism is an association of organisms where one organism is benefitted at the expense of other. Whereas, the association of organisms wherein one organism is benefitted while other remains unaffected is called as Commensalism. Mutualism is the association of organisms wherein both are benefitted. There is no negative effect of association on another organism. Thus, the correct answer is D.