Biology · BIOLOGICAL CLASSIFICATION

T.O. Diener (1971) discovered 'viroids' as the causative agent of potato spindle tuber disease. How do viroids structurally differ from conventional viruses?

1. A
   Viroids consist of free, low-molecular-weight RNA that completely lacks a protein coat
2. B
   Viroids consist of high-molecular-weight double-stranded DNA wrapped in capsomeres
3. C
   Viroids consist exclusively of misfolded proteins devoid of any nucleic acid genome
4. D
   Viroids consist of single-stranded RNA enclosed inside a thick chitinous cell wall