There Is a fungus among us! now what may seem as common joke, actually has merit. Breads, shower walls, even your toes all contain FUNGUS. By know you might be turning the area around you upside down looking mushrooms that seem a little out of place. That's the thing, not all fungi are mushrooms. a fungi is defined in the Merriam Webster Dictionary as "a kingdom (Fungi) of saprophytic and parasitic spore-producing eukaryotic typically filamentous organisms formerly classified as plants that lack chlorophyll and include molds, rusts, mildews, smuts, mushrooms, and yeasts" So yes, those pesky things that you kick over in your backyard but seem to come back in even more numbers are fungus. Why is that? well fungi do not have seeds like plants do. they release spores. Fungi are important because they help break down dead and decomposing matter, without them, the world would look a lot more gruesome... They are Multicelluar and are Eukaryotic. Fungi are neither autotrophics nor heterotrophs. They are decomposes.