AIIMS 2019 Botany Viruses MCQ Question

The diagram represents Tobacco Mosaic Virus (TMV), characterized by its rod-shaped structure and helical arrangement of RNA surrounded by a protein coat. TMV primarily infects plants, particularly tobacco, and is known for causing mottled leaf patterns. In contrast, option (A) Bacteria are unicellular organisms with a prokaryotic structure, (B) Bacteriophage are viruses that specifically infect bacteria and typically have a complex structure with a tail, and (D) Adenovirus is a non-enveloped virus with an icosahedral shape that primarily infects animals, including humans. Understanding these distinctions helps clarify the diverse forms and functions of pathogens in biology.