AP BIOLOGY

Detailed explanation-1: -The correct answer is (C) +/+. Mutualism is a type of symbiosis in which both species benefit from the relationship. In a way, the species are mutually benefitting each other. When denoting symbiotic relationships, a “+” symbol indicates that an organism benefits from the relationship.

Detailed explanation-2: -For Mutualism, a +/+ symbol is used because both species benefit from the interaction. Commensalism: an interaction between two species where one specie is neither helped nor harmed and the other one benefits.

Detailed explanation-3: -Mutualism is a type of symbiotic relationship where all species involved benefit from their interactions.

Detailed explanation-4: -Next to the name of each type of symbiosis are symbols indicating whether the organisms benefit, are harmed, or aren’t affected by the relationship. The symbol for commensalism is (+/0) which means one organism benefits and the other isn’t affected.