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An Intiative by Sri Chaitanya
a
Viroids were discovered by D.J. Ivanowsky.
b
W.M. Stanley showed that viruses could be crystallised.
c
The term 'contagium vivum fluidum' was coined by M. W. Beijerinck.
d
Mosaic disease in tobacco and AIDS in human being are caused by viruses.
answer is C.
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