Question

What is saprophytic nutrition

Answer 1

depending on other organism for food is saprophytic mode of nutrition. like fungi they depend on other organism for decomposition, thus they are saprophytes.

Answer 2

Saprophytic nutrition is the type of nutrition where the organism feeds on dead and decaying matter .Well the fact is that the organisms which are saprophytic in nutrition actually decay the dead organisms or the matter left outside for a day or two .Fungi are mainly involved in this and some of the bacteria 
So they are the ones responsible for your food to rot and they are the reason for decompositon of many other substances on earth which makes it possible for world to get rid of old food and many other things .......

hope it helps

courtesy :fire furry