Question

T.O. Diener discovered _______.

• A. Bacteriophage
• B. Infectious protein
• C. Free infectious DNA
• D. Free infectious RNA

Hint:

\textbf{Viroids} = free infectious RNA Discovered by \textbf{T.O. Diener}.

Answer 1

The Correct Option is D

Step 1: T.O. Diener was an American plant pathologist.
Step 2: In 1971, he discovered viroids, which are the smallest known infectious agents.
Step 3: Viroids consist only of short strands of naked RNA and do not have a protein coat.
Step 4: Hence, viroids are described as free infectious RNA.