Multiple choice

Which of the following diseases is/are caused by viroids?

  1. Potato spindle tuber

  2. Cholera

  3. Tobacco mosaic disease

  4. All of the above

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A Correct answer
Explanation

Potato spindle tuber disease is a classic example of a disease caused by a viroid. Cholera is caused by bacteria, and tobacco mosaic disease is caused by a virus.

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