an Entity references as follows:
Specificity in symbiosis refers to the taxonomic range with which an organism associates in a symbiosis. In a symbiosis between a larger organism such as a plant or an animal (called host) and a microorganism (called symbiont) specificity can be looked at both from the perspective of the host i.e. how many different species of symbionts does the host associate with (symbiont specificity), as well as from the perspective of the symbiont i.e. how many different host species can a symbiont associate with (host specificity).