Mycorrhizal fungi are a large group of lower plants that are extremely widely distributed and diverse in nature. Fungi are divided into the phylum Bacteria, the phylum Mucor and the phylum Fungi.

The morphology, structure, reproduction and life history of plants in these three separate phyla are very different, and are not related to each other. Therefore, now some taxonomists, bacteria and cyanobacteria are classified as prokaryotic organisms, while the mucus and fungi are classified as fungi, but the majority of scholars believe that these three phylums, although they are very different from each other, but they have obvious **** the same characteristics.