(C) In $1892$,$D.J. Ivanowsky$ recognized certain microbes as causal organisms of the mosaic disease of tobacco. These were found to be smaller than b

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(C) In $1892$,$D.J. Ivanowsky$ recognized certain microbes as causal organisms of the mosaic disease of tobacco. These were found to be smaller than bacteria because they passed through bacteria-proof filters. He named these infectious agents as viruses,which means 'venom' or 'poisonous fluid'.