Actually, musrooms dose not count as a plant.They just mushrooms. When mushroom says it comes to mind little umbrellas with other name meadow mushrooms. But cos. of it our breads and bagels become perfect this is yeast. HOW YEAST SWELL? Yeast is a mushroom type.But you cant see it cos it is extremely litte. İt flies awayand when it find a suitable place it take advantages from there. For example bread dough swells!When yeast enter to dough,dough starts to sweel. when this happen yeasts starts to product sugar and then they products carbndioksid. this carbondioksid makes bubble inside dough. that it to swell that dough.when the dough cooks those bubbles fill up whit air and we have soft breadss. MOLDS I think you saw moldy bread or chesse. those molds the easiest mushroom type.Molds provide dead alives to mix them with dirt.İf the forest is not ful