All fungi pass through two phases or stages in their life
cycle. These phases are vegetative or assimilative phase
and reproductive phase.
Vegetative phase In this phase, they go speedily in
the food giving substratum. The food substratum may
be bread, cheese, wood, etc. Coprophilous fungi grow
well on cow dung, dead parts of plants like fallen
leaves.
Reproductive phase In this phase, erect hyphae
develop which produce reproductive structure. In
unicellular yeasts, the entire cell becomes a
reproductive structure. This is the holocarpic condition.
In other fungi, reproductive structures develop from a
part of the vegetative body and the condition is called
eucarpic.