Fungi are eukaryotic organisms and include yeast, molds, mushrooms, etc. They belong to the kingdom Fungi, separate from the other kingdoms (such as bacteria, animals, plants, etc.). Fungi were considered to be plants for a long time; however, now they are classified in their own kingdom due to their uniqueness.
Fungi consist of tiny filaments called hyphae, which form mycelium--the living body of the fungus. Their cell walls are rigid and are made of chitin. Mushroom is the most commonly known fungi to us and is very frequently used as a food material. Yeasts are commonly used in making wine, bread, beer, etc. Fungi are used in the pharmaceutical industry. However, some fungi also cause diseases, including ringworms and athlete's foot (in human beings), rusts, smut and rots (in plants), etc.
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