T.O. Diener discovered a new infectious agent that was smal…

Biology Biological Classification Statement Based Questions Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

T.O. Diener discovered a new infectious agent that was smaller than viruses and have the following characteristics.

(i) It causes potato spindle tuber disease.

(ii) It has free RNA.

(iii) Molecular weight of RNA is low.

Identify the infections agent.

Viruses

Viroids

Virion

Mycoplasma

Text Solution

Verified by Experts

The correct answer is:

Viroids were discovered by T.O. Diener. They are:

• Smaller than viruses

• Cause potato spindle tuber disease

• Consist of only free circular RNA

• Have very low molecular weight RNA

• Do not have a protein coat.

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