Question

origin of nucellus cells?

Answer 1

This clear separation allows the conclusion that, in a eukaryotic cell, the nucleus is of archaeal origin, but the cytoplasm is of bacterial origin. So this is where thenucleus came from: way back in time, an archaeal cell entered a bacterium.

Answer 2

the central and chief part of a plant ovule that encloses the female gametophyte.