Question:

Viroids differ from viruses in having:

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Viroids are sub-viral agents as infectious RNA particles, without a protein coat. On the other hand, viruses possess DNA or RNA with a protein coat as their genetic material. While viruses can infect a wide range of organisms including plants, animals, or bacteria, viroids infect only plants.

Updated On: Mar 20, 2024
  • DNA molecules without protein coat
  • RNA molecules with protein coat
  • RNA molecules without protein coat
  • DNA molecules without protein coat
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The Correct Option is C

Solution and Explanation

Viroids differ from viruses in having RNA molecules without protein coat.

A virus is an infectious microorganism that comprises a segment of nucleic acid surrounded by a protein coat. On the basis of Genetic material, the virus is of two types, either DNA containing or RNA containing. Whereas viroid is infectious, highly structured small circular ribonucleic acids (RNAs) but does not contain protein as an outer covering. 

Therefore, the correct option is option (C) RNA molecules without protein coat.

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Concepts Used:

Biological Classification

The process of grouping living organisms into categories is called biological classification. The most modern 5-kingdom classification was put ahead by an eminent scientist R.H.Whittaker. The five-kingdom classification is based on the criteria like cell structure, mode of nutrition, body form, and reproduction. One of the most important characteristics of this system is that it follows the evolutionary sequence of living organisms. The organisms are classified into distinct taxa or levels like Kingdom, Phylum, Division, Class, Order, Family, Genus, and Species. The 5 kingdoms are as follows:

Biological Classification