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Question

Which one of the following statements is correct about the tobacco mosaic virus?


A
It affects all monocotyledonous plants.
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B
It affects photosynthetic tissue of the infected plant.
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C
It does not infect other species belonging to the Solanaceae.
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D
It infects gymnosperms.
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Solution

The correct option is B It affects photosynthetic tissue of the infected plant.
Tobacco mosaic virus (TMV) is a positive-sense single stranded RNA virus. It affects all dicotyledonous plants, specially tobacco and tomato plants. It also affects plants from Family Solanaceae. It affects the photysnthetic tissue, leaves of the infected plant. In the disease, there is mosaic-like mottling and discoloration on the leaves is observed.
Thus, the correct answer is option B.

Biology

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