In plants, mosaic formation, leaf rolling and curling, yellowing of plant parts, vein clearing, dwarfing and stunted growth, necrosis etc. are the symptoms of
A
bacterial diseases
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B
mycoplasmal diseases
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C
viral diseases
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D
fungal diseases.
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Solution
The correct option is C viral diseases Cucumber mosaic virus causes yellowing and mottling in Gerbera leaves. The CMV disease is described by extreme chlorotic mosaic, greening of veins on leaves, shading breaking in florets achieved with blossom disfigurements, and poor development of the sprout.