Biological Classification · Class 11 · CBSE · Science Biology
Which of the following statements is correct regarding viroids?
Practice question from Biological Classification (Class 11 · CBSE · Science Biology), with the correct answer and a step-by-step solution.
hard · MCQ · Q-7E6F31
Which of the following statements is correct regarding viroids?
- A.They contain a high molecular weight double-stranded DNA.
- B.They are infectious protein particles without any nucleic acid.
- C.They contain free RNA of low molecular weight and lack a protein coat.Correct answer
- D.They infect only animal hosts, causing spongiform encephalopathy.
Solution
T.O. Diener discovered viroids in 1971 as a new infectious agent that was smaller than viruses and caused potato spindle tuber disease. They consist of free low molecular weight RNA and lack the protein coat found in viruses.
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