Symbiotic relationship is a close interaction between two or more different species. In this type of interaction two species live together and both the species gets benifited mutually. It can be of two types :
1, Obligatory symbiotic relationship - Obligatory symbiotic relationship means that one or more of the symbionts entirely depend on each other for survival.
2. Facultative symbiotic relationship - Facultative symbiotic relationship when both the species can generally live independently.