Assertion: fungus's relationship | /r/HasProperty | obligate
Facets:
value: usually
type: DEGREE
value: for both species
type: OTHER
Source sentences:
text: Relationships can be obligate, meaning that one or both of the symbionts entirely depend on each other for survival.
text: Mutualistic relationships may be either obligate for both species, obligate for one but facultative for the other, or facultative for both.
text: Such relationship are usually not obligate and neither species will die if the association does not form.