Biological Classification Question 119
119. Satellite RNAs are present in some
(a) Plant viruses
(c) Prions
(b) Viroids
(d) Bacteriophages
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Answer : a
Hints & Solutions
(a) Plant viruses often contain parasites of their own, referred to as satellites. Satellite RNAs are dependent on their associated (helper) virus for both replication and encapsidation. Example-Tobacco Necrosis Virus (TNV). Viroids are infectious agents smaller than viruses. Bacteriophages are viruses that infect the bacteria. A prion is an infectious agent that is composed primarily of protein.
