NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

KINGDOM MONERA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Select wrong 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 WM Beijerinek
D
Mosaic disease in tobacco and AIDS in human being are caused by viruses
Explanation: 

Detailed explanation-1: -The first viroid discovered was the Potato spindle tuber viroid (PsTVd) which cause disease in potato and some other solanaceae plants. D.J. Ivanowski was the discoverer of the virus. So, the correct answer is ‘Viroids were discovered by D.J.

Detailed explanation-2: -Final answer: The incorrect statement is that the infective constituent in viruses is the protein coat.

Detailed explanation-3: -Final answer: Viroids have free RNA without a protein coat.

Detailed explanation-4: -Viroids were first discovered by T.O. Diener in the year 1971.

Detailed explanation-5: -The pathogen is called a viroid by its discoverer, Dr. Theodor 0. Diener, to distinguish it from a virus.

There is 1 question to complete.