Viroids lacks
Correct answer: C. Protective protein coat
- A. RNA
- B. Enzyme
- C. Protective protein coat
- D. All of these
Explanation
Viroids are small, circular, single-stranded RNA molecules that are infectious agents of plants. They are much smaller than viruses and lack many of the typical features of viruses, such as a protein coat or capsid, and do not encode any proteins.
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About Viruses
Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.
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