Home Biology Biological Classification NCERT Examplar Difference between virus and viroid is:
Biology Biological Classification NCERT Examplar Single Correct MCQ
Published on: August 12, 2026

Difference between virus and viroid is:

A
Absence of protein coat in viroid but present in virus. and
B
Presence of low molecular weight RNA in virus but absent in viroid.
C
Both
D
None of the above

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Text Solution

Verified by Experts
The correct answer is:
A

Virus contains DNA or RNA as genetic material and a protein coat, whereas viroids have no protein coat but only RNA as their nucleic acid. This is the reason why viroids are carried inside viruses. e.g., hepatitis-D is a viroid that is carried in the capsid of hepatitis-B virus.

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