NEET BIOLOGY

Detailed explanation-1: -Tobacco mosaic virus (TMV) particles are rod-like helical with 300nm length and 18 nm in diameter. It consists of 2140 protein subunits, each with a molecular mass of 17420 (158 residues), arranged on a helix.

Detailed explanation-2: -Filamentous viruses, particularly tobacco mosaic virus (TMV), have been important in developing fibre diffraction methods, and fibre diffraction allowed TMV to be among the first virus structures determined.

Detailed explanation-3: -The shape of tobacco mosaic virus (TMV) is cylindrical, having length 3000 Ao and diameter 170 Ao. If the specific volume of virus is 12.

Detailed explanation-4: -Tobacco mosaic virus (TMV) is a positive-sense single-stranded RNA virus species in the genus Tobamovirus that infects a wide range of plants, especially tobacco and other members of the family Solanaceae.

Detailed explanation-5: -Tobacco Mosaic Virus (TMV) has a very wide host range including tobacco, vegetables (especially in the Solanaceous family), and many ornamental species. The virus is sap-transmissable and is one of the most persistent and infectious plant viruses described.