Which of the following organisms rely on saprophytic nutrition for their survival?

Saprophytic nutrition is a type of heterotrophic nutrition in which organisms obtain their nutrients by breaking down dead or decaying organic matter. 

Saprophytic organisms, also known as saprotrophs or decomposers, feed on non-living organic matter such as dead plants, animals, and other organic materials, and convert them into simpler compounds such as carbon dioxide, water, and mineral ions. 

These simpler compounds can then be absorbed and used as a source of energy and nutrients by saprophytic organisms.