Question

Contagium vivum fluidum was proposed by

• A. D. J. Ivanowsky
• B. M. W. Beijerinck
• C. Stanley
• D. Robert Hooke

Hint:

Contagium vivum fluidum is an expression used for a virus. Martinus Willem Beijerinck, one of the founders of virology and a Dutch microbiologist and botanist, while studying tobacco mosaic virus, proposed that the tobacco mosaic virus (TMV) can pass through the finest filter available at that time.

Answer 1

The Correct Option is B

"Contagium vivum fluidum" in Latin means "contagious living fluid". This phrase was used for a virus by , Martinus William Beijernick (a Dutch microbiologist and botanist). Beijernick defined Contagium vivum fluidum" as the virus's ability to cause an infection and slip through the finest mesh filters available then, giving it liquid-like properties. This phrase defined a virus to behave like a soluble-living germ.

Quick History

• In 1892, Russian botanist Dmitri Ivanovsky, who studied the cause of the tobacco mosaic disease discovered that the causative agent could pass through the smallest filter available then called the Chamberlain's porcelain filter. 
• In the year 1898,  Beijernick while studying the same causative agents established that the liquid filtrate infected the host in spite of filtering in through the smallest available pore. 
• This made him conclude that the causative agent was fluid and he called it "Contagium vivum fluidum”.
•  In the year 1935, American biochemist and virologist Wendell Meredith Stanley revealed the first image of the virus using the electron microscope.  
• The microorganism was later visualized by the English scientist Robert Hooke under a microscope.
   

Also Read: Biological Classification