Question

Which of the following statements is wrong for viroids?

• A. They lack a protein coat
• B. They are smaller than viruses
• C. They cause infections
• D. Their RNA is of high molecular weight

Answer 1

The correct option is D Their RNA is of high molecular weight

Viroids are the smallest infectious pathogens known.They are smaller than viruses. They have a free RNA, lacking the protein coat that is found in viruses.

Viroids are small circular low-molecular-weight ribonucleic acids (RNAs) able to replicate autonomously and induce diseases in higher plants.

Viroids are single-stranded covalently closed circular RNA molecules existing as highly base-paired rod-like structures. The RNA of viroid is of low molecular weight.

So, out of the given options only option D is incorrect for viroids.