Is extragenomic $DNA$ present in prokaryotes and eukaryotes? If yes,indicate their location in both the types of organisms.

(N/A) Yes,extragenomic $DNA$ is present in both prokaryotes and eukaryotes.
In eukaryotes,extragenomic $DNA$ is found in organelles such as mitochondria and plastids (e.g.,chloroplasts).
In prokaryotes,extragenomic $DNA$ is primarily found in the form of plasmids. Plasmids are small,circular,double-stranded $DNA$ molecules that are distinct from the chromosomal $DNA$ and provide unique phenotypic characteristics,such as antibiotic resistance,to bacterial cells.