Symbiotic Relationships Symbiotic Relationships ▪ symbiosis - the relationship between two different individual species that live together in a close relationship (living together) ▪ The word symbiosis can be broken down into two parts to determine its meaning ▪ sym means together ▪ bio means life Types of Symbiosis ▪ There are three types of symbiotic relationships ▪ Mutualism (+, +) ▪ Commensalism (+, 0) ▪ Parasitism (+, -) ▪ Each relationship can be shown using + , - , or 0 Mutualism ▪ mutualism - a relationship where both organisms benefit ▪ A + / + relationship The acacia galls are homes to stinging ants and the ants defend acacia from other insects that would harm tree leaves. ▪ Think of a normal friendship where both friends gain something from the friendship

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