Holozoic nutrition refers to typical
animal nutrition in which food is 1) internalized, 2) broken down to liquid or
smaller particles, 3) further broken down to individual molecules 4) molecules
are absorbed into the body, and 5) waste is released from the body.
Saprophytic nutrition is nutrition by decomposing organisms like fungus or
bacteria in which food is 1) left external to the organisms, 2) digestive
enzymes are released from the organism into the decomposing material/food, 3)
biomolecules are release from the food particles outside the organism, 4)
molecules are then absorbed into the organism, and 5) waste is left outside
Whereas saprophytes are organism which derives nutrition from dead organism...so parasites causes harm to host but not the saprophytes.