Short / Long answer type questions.
Write a brief account of viroids and prions.

1. Viroids are plant pathogens that contain a very short circular, single-stranded RNA that does not have a protein coat.
2. They are essentially strands of naked RNA.
3. They are much smaller than viruses.
4. Prions are protein particles that can affect other proteins to form abnormal shapes, which causes disease.
5. The prions and viroids are sometimes called subviral particles.