The thing that speaks against what we usually understand under evolution is that neither Rahi nor other MU beings can reproduce.
Thus I personally always saw Rahi that were described as "related species" as deriving partially from the same viruses or representing "updated" versions of an older Rahi version or something such.
However, plants in the MU seem to reproduce - as seen with the Morbuzahk seeds and seedlings. This probably would be an asexual, purely vegetative process, but still it might allow evolution, if during normal plant growth mistakes in copying the "genome"/programming of the plant could happen and thus be passed on to the next generation. Or might it even be possible for plants to be created in a way that lets them make these mistakes frequently and thus speed up evolution?
So if I may, I'd like to add a question:
Can plants in the MU evolve naturally?