The mycelium grows through the medium on which the fungus feeds.
Contrary to its name, ringworm is not caused by a worm, but by a fungus, and it is quite common, especially among children.
Lichens are a combination of an algae, which provides food through photosynthesis, and a fungus, which provides protection to the algae.
A fungus is a eukaryotic organism that digests its food externally and absorbs the nutrient molecules into its cells.
Mushrooms are the above ground fruiting bodies of various species of fungus that mostly live on decaying plant material in soil.
One of the most important things that some fungi can do is to break down wood. Without them we would have lots of waste wood around, and there wouldn't be enough goodness in the soil for plants to grow. Some fungi make medicines such as penicillin whilst others make foods such as marmite, cheese, bread and beer.