Question

How is symbiosis different from commensalism? Explain by giving one example of each.

Answer 1

Basis of Difference	Symbiosis	Commensalism
Effect on species	Both species benefit	One benefits; the other is unaffected
Association	Often close and interdependent	Need not involve close dependence
Physiological relationship	May involve close functional exchange	No necessary physiological exchange
Example	Alga and fungus in a lichen	Orchid growing on a mango tree