1. saprophyte is a way for organisms to obtain nutrition. Any organism that obtains nutrients from animal and plant carcasses or decaying tissues to maintain its own life is called saprophyte. Most molds, bacteria, yeast and a few higher plants belong to saprophytes. Aerobic decomposition of saprophytes in soil is a necessary link of material circulation.

Mushrooms, shiitake mushrooms, fungus, tremella, Hericium erinaceus and Ganoderma lucidum are typical saprophytic bacteria, and most of them feed on dead branches, roots or places rich in organic matter. Aspergillus, Penicillium and other molds are saprophytic bacteria, and their bodies are composed of hyphae. Earthworms are also saprophytes.

Parastisu means that two creatures live together, one benefits and the other suffers, and the latter provides nutrients and living places for the former. This biological relationship is called parasitism.

Like green plants, using their own organic matter to maintain life is called autotrophic, which is an important feature of various green plants.

Self-nutrition; In particular, carbon dioxide or carbonate can be used as the only carbon source and can be metabolized and synthesized by simple inorganic nitrogen-generally green plants, some chemoautotrophic bacteria and protoplasm; Normal metabolism does not need specific external factors.

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