Q327
All plant viruses (except cauliflower mosaic virus) contain
A.
DNA
B.
RNA
AnswerC.
Both A and B
D.
Either A or B
Answer: Option B
Solution
Answer: Option B
Solution:
All plant viruses (except cauliflower mosaic virus) contain RNA.Plant viruses are obligate intracellular parasites that do not have the molecular machinery to replicate without a host. The great majority have an RNA genome, which is usually small and single stranded (ss), but some viruses have double-stranded (ds) RNA, ssDNA or dsDNA genomes.
Cauliflower mosaic virus (CaMV) is a member of the genus Caulimovirus, one of the six genera in the family Caulimoviridae, which are pararetroviruses that infect plants. The viral particles contain DNA instead of RNA.