Answer:
Viroids different from viruses
S. No.
Virus
Viroids
1.
These are smaller than bacteria
Smaller than viruses.
2.
Both RNA and DNA present.
Only RNA is present.
3.
Protein coat present.
Protein coat absent.
4.
Causes diseases like mumps and
AIDS.
Causes plant diseases like spindle tuber diseases-potato.
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