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Which of the following statements about viroids is accurate?

1. Viroids were identified by Dr. Theodor O. Diener, who differentiated them from viruses.
2. Viroids are tinier in size compared to viruses.
3. Viroids act as infectious entities.
4. All of the mentioned statements are correct.

Correct answer: All of the mentioned statements are correct.

Solution

All the given statements are correct: Dr. Theodor O. Diener discovered viroids, they are smaller than viruses, and they are infectious agents. Thus, the correct answer is 'All of the above.'

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