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| Column-$I$ | Column-$II$ |
|---|---|
| $P$ | $I$. Tobacco Mosaic Virus |
| $Q$ | $II$. Bacteriophage |
| $R$ | $III$. Adenovirus |
| Column $I$ | Column $II$ |
| $(a)$ Potato spindle tuber | $(i)$ Virus |
| $(b)$ Creutzfeldt-Jakob disease $(CJD)$ | $(ii)$ Viroid |
| $(c)$ Cholera | $(iii)$ Prion |
| $(d)$ Leaf rolling and curling | $(iv)$ Bacteria |
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