NEET 2017 · BiologyViroids lichensPrevious Year Question
Viroids differ from viruses in having :
Answer: (D) RNA molecules without protein coat. Answer: (D) RNA molecules without protein coat Solution: A viroid is a free RNA that lacks the protein coat (capsid) found in viruses—hence the name viroid.
- A.DNA molecules with protein coat
- B.DNA molecules without protein coat
- C.RNA molecules with protein coat
- D.RNA molecules without protein coat✓
Correct Answer
(D) RNA molecules without protein coat
Solution & Explanation
Answer: (D) RNA molecules without protein coat Solution: A viroid is a free RNA that lacks the protein coat (capsid) found in viruses—hence the name viroid. Viruses, by contrast, have a nucleic acid (RNA or DNA) enclosed in a protein coat, so viroids differ by being free RNA without a coat. NCERT Reference: NCERT Class XI, Biological Classification, p.21, lines 28-29 — "a free RNA; it lacked the protein coat that is found in viruses"
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