Home Biology Biological Classification Skill Builder Select incorrect statement.
Biology Biological Classification Skill Builder Single Correct MCQ
Published on: August 12, 2026

Select incorrect statement.

A
The viroids were discovered by DJ Ivanowski
B
WM Stanley showed that viruses could be crystallised
C
The term ‘Contagium vivum fluidum’ was coined by MW Beijerinck
D
Mosaic disease in tobacco and AIDS in human being are caused by viruses

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Text Solution

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The correct answer is:
A

Theodor O. Diener discovered viroids in 1971 while studying the potato spindle tuber disease.

D.J. Ivanowski (Dmitri Ivanovsky) is known for discovering viruses in 1892. He recognized that certain microbes causing mosaic disease in tobacco were smaller than bacteria because they could pass through bacteria-proof filters.

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