Q1 / 180 · NEET 2020 (Phase 1) · Botany

Which of the following is correct about viroids?

  • Correct answer
    A
    They have free RNA without protein coat
  • B
    They have DNA with protein coat
  • C
    They have free DNA without protein coat
  • D
    They have RNA with protein coat

Solution

VIROIDS: Viroids are smaller than viruses, self-replicating particles that were discovered by T.O. Diener (1971). Viroids are infectious RNA particles that are devoid of protein coat. The molecular weight of RNA in viroid is low in comparison to viruses. Potato spindle tuber is a viroid causing disease.

Hence, the correct answer is option: 'A'.

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