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    Question

    Who discovered that the potato spindle tuber disease was caused by small naked ssRNA and called it a viroid?

    A Mathieu Tillet Correct Answer Incorrect Answer
    B Anton de Bary Correct Answer Incorrect Answer
    C Diener Correct Answer Incorrect Answer
    D Howard Taylor Ricketts Correct Answer Incorrect Answer

    Solution

    Explanation: Diener discovered the viroid as the causative agent of the potato spindle tuber disease.

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