Chytrids, the organisms found in Chytridiomycota, are usually aquatic They are usually asexual, and produce spores that move around using flagella, small tail-like appendages.
Zygomycota

Zygomycetes are mainly terrestrial and feed off of plant detritus or decaying animal material. They also cause problems by growing on human food sources.
Glomeromycota

Glomeromycetes make up half of all fungi found in soil, and they often form mycorrhizae with plants

Ascomycetes are often pathogens of plants and animals, including humans, in which they are responsible for infections
Basidiomycota

Like ascomycetes, basidiomycetes also produce sexual spores called basidiospores in cells called basidia.

A unicellular fungus which includes baker's yeast. Yeast can also be found in pharmacies as pro biotic which can help prevent diarrhea.

2. Mold

A multicellular fungus and appear as fuzzy growths. It is useful. For example, mold was used to produce the antibiotic penicillin. Mold is used to produce cheese.

3. Mushrooms

A fleshy, spore-bearing fruiting body of a fungus, typically produced above ground on soil or on its food source.

Fungi cause three different types of human illness: poisonings, parasitic infections, and allergies. Many poisonous mushrooms are eaten by mistake because they look like edible mushrooms. Parasitic yeasts cause candidiasis, ringworm, and athlete's foot. Mold allergies are very common.

The fungus producing more than one type of spores is called the pleomorphic or polymorphic.

Sexual:
In the lower fungi, there is complete fusion of the nuclei of the two different strained gametes in the sexual union, i.e., karyogamy, whereas in the higher fungi, i.e., Ascomycetes and Basidiomycetes, the fusion of the two nuclei of different strains is delayed and the pairs of the nuclei called the ‘dicaryons’ are formed. The mycelium having such pairs of nuclei is called the ‘dicaryotic mycelium’. 

Fungi get their nutrition by absorbing organic compounds from the environment. Fungi are heterotrophic: they rely solely on carbon obtained from other organisms for their metabolism and nutrition. Fungi have evolved in a way that allows many of them to use a large variety of organic substrates for growth, including simple compounds such as nitrate, ammonia, acetate, or ethanol. Their mode of nutrition defines the role of fungi in their environment.

Fungi obtain nutrients in three different ways:

Both parasitism and mutualism are classified as symbiotic relationships, but they are discussed separately here because of the different effect on the host.

Fungi are found in almost any habitat, including the International Space Station (ISS), where they were found to decompose food, with some spores surviving 5 months in microgravity

Many live on the land, mainly in soil or on plant material. They are one of the most widely distributed organisms on the Earth

They feature in foods, such as mushrooms and baker’s yeast, and they have important roles in medicine and the environment. 

Multicellular fungi have many hyphae (singular: hypha), which are branching filaments. Hyphae have a tubular shape and are split into cell-like compartments by walls that are known as septa. These cells can have more than one nucleus, and nuclei and other organelles can move in between them. (There is some debate over whether multicellular fungi are truly multicellular, because organelles and cytoplasm can move from one cell to the other in a process called cytoplasmic streaming. They are commonly known as multicellular, but they are not multicellular in the same way as plants and animals, which have enclosed cells.) A fungus’s network of hyphae is called a mycelium.