A) ammensalism
B) parasitism
C) predation
D) exploitation
Correct Answer: A
Solution :
In ammensalism one component (population) is harmed and the other remains unaffected. The alga Microcystis release hydroxyl amine that kills the surrounding fauna but the alga itself remain unaffected. Parasitism is generally considered to deal with any small organism that live on or in another organism regardless of whether its effect is negative, positive or neutral. In predation one population adversaly affects the other by direct attack but nevertheless depends on other. In exploitation one species harms the other by making its direct or indirect use for support, shelter or food.
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