Answer:
Fungi are either saprophytes or parasites.
Fungi are parasites on the living organism. They live in the body of the host cell and gets nutrition from the host body. The Fungus Septobasidium is parasitic in nature and feeds on the tree. They form the mycelium that feeds on the bark of the trees.
Some of the fungus show saprophytic behavior as they feed on the dead and decaying matter of prey and they release the digestive enzymes outside the body and absorb the digested food(nutrients) inside their body.