Which characteristic distinguishes viroids from viruses?
Presence of RNA
Ability to infect plants
Lack of a protein coat
Small size
Related Questions
Which one of the following is correctly matched?
National Institute of Virology – Pune
National Institute of Communicable Diseases – Lucknow
Central Drug Research Institute – Kasauli
National Institute of Nutrition – Mumbai
Viruses and viroids are the non-cellular organisms, which are not characterised in the classification of
Whittaker
Aristotle
Linnaeus
Watson
Viroids differ from viruses in having
Naked RNA molecules only
Naked DNA molecules only
Naked DNA packed with viral genome
Satellite RNA packed with viral genome
Which of the following would appear as the pioneer organisms on bare rocks?
Lichens
Liverworts
Mosses
Green algae
TMV was first crystallised by
Beijerinck
Pasteur
W.M.Stanley
Franklin
Organisms which are indicator of Pollution of air.
Mosses
Lichens
Mushrooms
Puffballs
Virus multiplies in
Soil
Dead tissue
Living tissue
Culture medium
The genetic material of rabies virus is
Double stranded RNA
Single stranded RNA
Double stranded DNA
Single stranded DNA
Organisms made with only RNA cause the following disease
Scrapie disease of sheep
Mad cow disease
Potato spindle tuber disease
AIDS
The microscopic proteinaceous infectious agents are
Viroids
Prions
Protozoa
Bacteria
