Viroids are different from Viruses. Justify .
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Answers
Viroids are infectious entities that affect plants which are smaller compared to a virus. They consist of only the nucleic acid without a protein coat.
Viruses are an infective agent consisting of a nucleic acid molecule in a protein coat
Viroids are different from viruses in the following ways:
➠ Its RNA does not code for protein
➠ It exists within the cells as RNA particles only with no envelope or capsid
➠ It possesses only one circular RNA strand comprising of very few
nucleotides
➠ Contrary to viruses, viroids require no help of viruses to infect cells
➠ Contrary to viruses of which the RNA can be copied in the nucleus or
cytoplasm, the RNA of viroids are copied in the nucleus only
➠ To detect the presence of viroids in the plant tissues, special techniques
are used
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