could you distinguish between colonies of bacteria, yeasts and moulds? How?

Question

1 mark answer

Answer 1

Yes.
Moulds are solid structures that you pour a liquid in that either gels or solidifies. They do not appear on agar because they are usually too big.
By the look of the colony on the plate, by microscopic examination and by selection criteria in the media. PCA will grow "everything", but PDA tends to grow yeast and mold.

Answer 2

Well mould and yeast are fungus and as such appear more evolved. Certainly on a petri dish they would be remarkably similar.