2020 Biological ClassificationViruses, Viroids and Lichens Easy Question 16 of 117 in Biological Classification

Which of the following is correct about viroids?

A They have free RNA without protein coat.
B They have DNA with protein coat.
C They have free DNA without protein coat.
D They have RNA with protein coat.

The answer is A.

Solution

Viroids are infectious agents consisting of free RNA without a protein coat (found by T.O. Diener, causing potato spindle tuber disease).

Concept structure of viroids

Biological Classification in past papers

117 questions from this chapter have appeared across 26 exam years.