NCERT Solutions for Class 11 Science Biological Classification 2
Important Board Questions
Biological Classification
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Question : 5
How are viroids different from viruses?
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Viroids were discovered in 1917 by T.O. Denier. They cause potato spindle tuber disease. They are smaller in size than viruses. They also lack the protein coat and contain free RNA of low molecular weight.
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