Why bacteria needs termite gut?

Termites primarily feed on wooden substances. As the wood contains cellulose and the termites cannot digest them, they take the help of bacteria called "Trichonympha". This bacterium assists in digestion of cellulose in termites. This type of relation between the bacterum and the termites is called as SymbiOSis. This is a type of relation in which both of the participating organisms get mutually benefited. In this context termites get their food digested and the bacteria receive food and shelter in the gut of termites.