Termites ingest wood. They cannot, however, digest wood fibers. Instead, "Termites rely on single-celled animals -- protozoa -- that live in their gut to digest the hard components of wood, freeing up the cellulose that nourishes them." (Grady, 1996) They live off of the by-products of this process.
Plant Foods: roots and tubers; wood, bark, or stems
Primary Diet: herbivore (Lignivore)