What type of organisms are classified as saprophytes?

Saprophytes are organisms that play a crucial role in ecosystems by decomposing dead organic matter. They obtain their nutrients from the remains of dead plants, animals, and other organic materials. This process helps recycle nutrients back into the soil, making them available for use by other organisms, primarily plants.

By breaking down complex organic substances into simpler compounds, saprophytes facilitate the nutrient cycle, which is essential for ecosystem health. Examples of saprophytic organisms include certain fungi and bacteria that thrive on decaying matter.

The other options describe different ecological roles: the first option refers to autotrophic plants that produce their own energy through photosynthesis, while the third describes predators that hunt for live prey. The fourth option involves parasites, which derive their nutrients from living hosts and can harm those hosts in the process. Thus, saprophytes specifically are recognized for their unique ability to decompose and recycle dead organic material.