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  4. Study the given figure of structure of TMV (Tobacco Mosaic Virus) and select the option that correctly identifies the labellings A and B. <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/biology/cef9d667e7ba7296b5fb94dc3a54dc5c-.png /> A B (a) ssDNA Capsomeres (b) dsDNA Capsomeres (c) ssRNA Capsomeres (d) dsRNA Tail fibres

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Q. Study the given figure of structure of TMV (Tobacco Mosaic Virus) and select the option that correctly identifies the labellings A and B.
image
A B
(a) ssDNA Capsomeres
(b) dsDNA Capsomeres
(c) ssRNA Capsomeres
(d) dsRNA Tail fibres

Biological Classification

Solution:

TMV (Tobacco mosaic virus) is a ribovirus. It is rod shaped measuring $300 \times 20 nm$. It is made up of ssRNA and proteinaceous covering capsid with 2130 capsomeres, which are helically arranged to form a hollow cylinder.