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Difference between virus and viroid is...

Difference between virus and viroid is

A

absence of protein coat in viroid but present in virus

B

presence of low molelcular weight RNA in virus but absent in viroid

C

both (a) and (b)

D

none of the above

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The correct Answer is:
A
Viroids are smallest known agent of infectious diseases.They lack capsid as well as proteins (that are present in virus) and consist of only single stranded RNA.The RNA of the viroid is of low molecular weight .
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