Biology Biological Classification Viruses, Viroids, Prions, Lichens and Mycorrhiza Single Correct MCQ
Published on: August 13, 2026

Which of the following plant viruses has DNA?

A
Tobacco mosaic virus
B
Potato mosaic virus
C
Tomato mosaic virus
D
Cauliflower mosaic virus

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Text Solution

Verified by Experts
The correct answer is:
D

Cauliflower mosaic virus (CaMV) was the first plant virus discovered to have a DNA genome rather than RNA. Specifically, it contains a circular double-stranded DNA (dsDNA) molecule. Most plant viruses use RNA as their genetic material, making CaMV a significant exception in plant virology.

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