Which of the following is an example of viral disease?

Leaf curl of Papaya

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Late blight of Potato

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Black rust of Wheat

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Red rot of Sugarcane

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Solution

The correct option is A Leaf curl of Papaya
Leaf curl of papaya is caused by papaya leaf curl virus. Papaya leaf curl virus (PaLCuV) is a DNA virus from the family Geminiviridae. This virus consists of a circular single-stranded DNA molecule and betasatellite. Late blight of potato, the red rot of sugarcane and black rust of wheat are fungal diseases. So the correct answer is 'Leaf curl of Papaya'.

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