Mushroom is the above ground sexual structure of the fungus. A mushroom typically consists of a stype which support a cap. The other side of some mushroom type has hundred of thin sheet of tissue extending out from the stalk (gills). Club-shaped basidiums line the gill surface. When basidiospore lands on suitable environment it germinate to create hypae in form of haploid mycelium of two different mating type which when in contact fused crating mycelium.