Viroids differ from viruses in having

Options

(a) naked DNA packaged with viral genome
(b) naked DNA molecules
(c) satellite RNA packed with viral genome
(d) naked RNA molecules only

Correct Answer:

naked RNA molecules only

Explanation:

Viroids are free RNA molecules of low molecular weight without any protein coat while viruses can have either RNA or DNA molecules encapsulated in a protein coat. Viroids are smaller in size than viruses.