Fungus is a eukaryote. The most common fungi are all kinds of mushrooms, and fungi also include molds and yeasts. Now more than 70,000 kinds of fungi have been found, which is estimated to be only a small part of all the existing ones. Most fungi were originally classified as animals or plants, but now they have become their own boundaries, divided into four phylum.
Fungi is a branch of itself, different from plants, animals and bacteria. The biggest difference between fungi and other three kinds of organisms is that the cells of fungi have cell walls mainly composed of chitin (also called chitin, chitin, chitin), which is different from the cell walls of plants mainly composed of cellulose.
Fungus means mushroom in Latin. Historically, fungi have been regarded as similar to plants, and even as a kind of plants by botanists, but fungi are actually single-flagellated organisms, while plants are double-flagellated organisms. Unlike embryonated plants and algae, fungi do not carry out photosynthesis, but belong to saprophytes-they get food by rotting and absorbing the surrounding substances. Most fungi are composed of microstructures called hyphae, which may not be counted as cells, but have eukaryotic nuclei. Mature individuals (such as the most familiar mushrooms) are their reproductive organs. They are not related to any viable photosynthetic organisms, but they are very close to animals and belong to post-flagellate organisms. Therefore, fungi are divided into their own world.