Botany - Biological Classification Question with Solution | TestHub

All viruses are nucleoprotein (Nucleic acid + Protein) in the structure. The nucleic acid (DNA and RNA) is the genetic material. In a particular virus, either DNA or RNA is genetic material; never both are present in a virus. Hence viruses are:

(i) Double-stranded DNA or ds DNA - Hepatitis B

(ii) Single-stranded DNA or ss DNA - Coliphage

(iii) Double-stranded RNA or ds RNA - Reovirus, wound Tumor virus

(iv) Single-stranded RNA or ss RNA - Tobacco mosaic virus (TMV)