NCERT Solution: Biological Classification
Contagium vivum fluidum was proposed by
(a) D.J. Ivanowsky
(b) M.W. Beijerinek
(c) Stanley
(d) Robert Hook
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Ans. (b) M.W. Beijerinek
Beijerinek demonstrated that extracts of infected tobacco plant can cause infection in healthy plants and termed the fluid as contagium vivum fluidum (infectious living fluid).
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