Which of the following is not a feature of a prokaryotic cell?

 Prokaryotes are the organisms that consists of a single cell and the cell is poorly developed hence the name 'pro'. All prokaryotes have chromosomal DNA localized in a nucleoid, ribosomes, a cell membrane and a cell wall. They do not contain membrane-bound cell organelles. And they lack the Endoplasmic Reticulum.

So, the correct option is (D).