NEET 2020
- Exam
- NEET
- Year
- 2020
- Subject
- Botany
- Chapter
- Biological Classification
NEET 2020 · Botany · Biological Classification
Which of the following is correct about viroids?
Which of the following is correct about viroids?
Options
- AThey have free RNA without protein coat
- BThey have DNA with protein coat
- CThey have free DNA without protein coat
- DThey have RNA with protein coat
Correct answer
A. They have free RNA without protein coat
Step-by-step 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.