A) Stanley
B) Ivanowski
C) Herelle
D) Beijerinck
Correct Answer: B
Solution :
The credit for the discovery of virus goes to D J Ivanowski (1892), a Russian botanist, who prepared an extract of tobacco mosaic diseased plant which when passed through bacteria filter filtrate fluid was still infectious. Wendell Stanley (1933) purified TMV in crystal form.
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