Q.

Which of the following statements is incorrect ?

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a

TMV has a double-stranded RNA molecule.

b

Most plant viruses are RNA viruses.

c

The bacteriophage usually has double-stranded DNA.

d

Animal viruses have either DNA of RNA

answer is A.

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Detailed Solution

Tobacco mosaic virus (TMV) is a single stranded RNA virus that infects a wide range of plants, especially tobacco and other members of the family Solanaceae.

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