Question

Which of these contain RNA as the genetic material?
(i) Lichens
(ii) Prions
(iii) Viroids
(iv) Viruses

• A. i and iv
• B. ii and iii
• C. i and ii
• D. iii and iv

Answer 1

The correct option is D iii and iv

Viruses are obligate parasites, which are smaller than bacteria and lack a cellular structure. Some viruses have RNA as their genetic material.

Viroids are infectious agents even smaller than viruses and contain only RNA.

Lichens are symbiotic association between algae and fungi, both of which have DNA as their genetic material.

Prions are proteinaceous infectious agents.