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B
Bacteriophage
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C
TMV
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D
Protozoan
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Solution
The correct option is D TMV
TMV has RNA as a genetic material. The RNA present in the TMV is a positive-sense single-stranded RNA virus that infects a wide range of plants, especially tobacco and other members of the family Solanaceae. The infection causes characteristic patterns, such as "mosaic"-like mottling and discolouration on the leaves. TMV was the first virus ever to be discovered.