The correct answer is Mosaic disease of tobacco. Explanation & Key Takeaways: • The Tobacco Mosaic Virus (TMV) attacks tobacco and several other species including tomatoes and peppers. • It is transmitted either naturally or through the farmers through interaction between plants. • It infects the chloroplasts of the plant leaves and changes its colour in the mosaic pattern between green and yellow or white. • TMV is the type member of a large group of viruses within the genus Tobamovirus. Related Concepts: • Citrus canker is a bacterial disease that causes lesions on the leaves, stems, and fruit of plants including citrus and other plants in the citrus family. • The smut of jowar is a fungal disease that affects plants. They are named as such because the infected plants show characteristics of rust and smut, • Rhizoctonia root rot is caused by the soil-borne fungus Rhizoctonia solani.