Explanation
Fungi reproduce by only asexual methods in D: Deuteromycetes.
Deuteromycetes, also known as fungi imperfecti, are a group of fungi that do not produce sexual spores under normal laboratory conditions. Instead, they reproduce exclusively by asexual methods, such as fragmentation, budding, or spore formation by mitosis.
Many fungi in the Deuteromycetes group have not been observed undergoing sexual reproduction, but it is believed that they are descended from ancestors that once had the ability to reproduce sexually. Some fungi that were once classified as Deuteromycetes have been reclassified into other groups as their sexual reproductive stages were discovered.
In contrast, Myxomycetes, Ascomycetes, and Basidiomycetes are groups of fungi that can reproduce both sexually and asexually. Myxomycetes reproduce asexually by forming spores through mitosis, but they also have a sexual reproductive stage involving the fusion of haploid cells. Ascomycetes and Basidiomycetes reproduce both sexually and asexually, and are characterized by their production of sexual spores in unique structures called ascocarps and basidiocarps, respectively.
