Question

define symbiotic relationship

Answer 1

In symbiotic relationship two organisms will help each.They will be beneficial to each other.They won't harm each other.
Like rhizobium bacteria will present in root nodules of dal family plants.Here plants and rhizobium are in symbiotic relationship.Rhizobium will convert atmospheric nitrogen into nitrogenous compounds,which is essential for growth of plants.Rhizobium will get shelter.So,both are beneficial to each other.

Answer 2

Sometimes two organisms live in close association and develope a relationship that is beneficial to both. This is called symbiotic relationship. [symbion="to live together"].