Question

Read the given statements that describe certain infectious particle. (i) It was discovered by $T.O$. Diener and was found to be smaller than viruses. (ii) It causes potato spindle tuber disease. (iii) It is a free $RNA$ particle which lacks the protein coat. (iv) It has low molecular weight $RNA$ as genetic material. Which of the following is referred to here?

• A. Virus
• B. Viroid
• C. Virion
• D. Bacteriophage

Answer 1

Answer: (B)

Viroid

Answer 2

Answer (b) Viroid