What is the main difference between viroids and viruses?

What is the main difference between viroids and viruses?
  1. Viroids lack a protein coat, while viruses have one
  2. Viroids have a protein coat, while viruses lack one
  3. Viroids have low molecular weight RNA, while viruses have high molecular weight RNA
  4. Viroids are obligate parasites, while viruses are saprophytic

Solution

Viroids lack the protein coat that is found in viruses.

Asked in: NCERT

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