Identify the true statements for viroids. (i) In 1971, T.O.…

Biology Biological Classification Statement Based Questions Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

Identify the true statements for viroids.

(i) In 1971, T.O. Diener discovered it and was smaller than viruses.

(ii) It was found to be a free RNA, it lacked the protein coat.

(iii) The RNA of the viroid was of high molecular weight.

(iv) Caused potato spindle tuber disease.

(i) and (iii)

(i), (ii) and (iv)

(i), (ii), (iii) and (iv)

Only (iii)

Text Solution

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The correct answer is:

Viroids were discovered by T.O. Diener and are smaller than viruses.

They are free RNA molecules without a protein coat.

They cause diseases like potato spindle tuber disease.

Statement (iii) is incorrect because viroid RNA has low molecular weight.

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