Fungus (singular for fungi) refers to a kingdom that includes organisms such as molds, mushrooms, and yeast characterized by being heterotrophs, and decomposers. This means different from plants they cannot produce energy but need to absorb external substances. Additionally, they are decomposers because they break down decaying matter such as dead animals and it is in this way they obtain nutrients, and energy. Moreover, fungi are the main decomposers organisms, although some bacteria are decomposers. Therefore, the scientist should classify this organism as Fungi considering the organism he examined feed on decaying matter and therefore is a decomposer, while others such as plants, animals, and most archaea are not decomposers.
