Symbiosis(sum, and +=Mutualism. Both species benefit from the interaction between the two species t and 0= commensalism. One species benefits from the interaction and the other is unaffected I+and-=Parasitism. One species benefits from the interaction and the other is adversely affected (harmed). The categories of symbiosis are man-made constructed to introduce primarily for convenience. In fact, they can be overlap between various categories◼ + and + = Mutualism. Both species benefit from the interaction between the two species. ◼ + and 0 = Commensalism. One species benefits from the interaction and the other is unaffected. ◼ + and - = Parasitism. One species benefits from the interaction and the other is adversely affected(harmed). The categories of symbiosis are man-made constructed to introduce primarily for convenience. In fact, they can be overlap between various categories. Symbiosis (sum.)