Question

The genetic material of papaya mosaic virus is
A. ssDNA
B. dsDNA
C. dsRNA
D. ssRNA

Answer 1

Hint: A mosaic virus is a virus which causes infected plant foliage to possess a mottled appearance. Such viruses come from a spread of unrelated lineages and consequently there's no taxon that unites all mosaic viruses. There are various kind of mosaic viruses - Tobacco Mosaic Virus (TMV), Papaya Mosaic Virus (PapMV), Cucumber Mosaic Virus (CMV) and more.

Complete Answer:
Papaya Mosaic Virus which is in short known as PapMV, is composed of filaments. The structure of PapMV is in flexuous rod shape. This virus is a monopartite strand of having a single nucleic acid molecule of positive-sense. Its genetic material is single-stranded RNA (ssRNA) bounded by a capsid made for a single viral protein. This Papaya Mosaic Virus disease will be spread from plant to plant and also when any other plant is grafted with the infected plant.
Hence from the above information, we can conclude that the genetic material of papaya mosaic virus cell wall is ssRNA.

Thus, the correct option is D.

Note: Most of the viruses will be having either DNA or RNA as their genetic material. Here in the given options, ss stands for single-stranded, ds stands for double-stranded. The nucleic acid of them may be either single or double-stranded. In papaya mosaic virus, the genetic material is single-stranded which means the nucleic acid molecule is single stranded in PapMV. Double-stranded RNA can be found in Tobacco Mosaic Virus. Single-stranded DNA can be found in Tomato Gold Mosaic Virus. Double-stranded RNA can be found in Pepper Mild Mottle Virus.