Viral Infection in Different Organisms

Viruses are obligate intracellular parasites that can infect a wide range of organisms. They can infect bacteria (bacteriophages or phages), fungi (mycophages), and plants (plant viruses). Bacteriophages specifically infect bacterial cells. Fungal viruses exist and infect fungal cells. Plant viruses cause diseases like mosaic virus in tobacco and other crops. All three statements are correct, so the answer is 1, 2 and 3.