The living organisms that live and feed on dead and decaying organisms are called saprophytes. The digestion process in saprophytes is a little complex.Saprophytes undergo extracellular digestion.Digestive substances are secreted into the surrounding environment and the organic matter is broken down into simpler substances. The nutrients thus produced are absorbed directly through the cell membranes of the organisms. In saprophytic nutrition, the proteins are digested and converted into amino acids, starch is broken down into simple sugars, and fats are broken down into glycerol and fatty acids. These end products are transported through the cell membranes.