Potato spindle tuber disease is caused by

Options :
  1. Virus
  2. Virion
  3. Viroid
  4. Prion
Answer and Explanation :-

Answer: Option 3

Explanation:

Viroids are infectious free RNA particles

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Inventory:"Four be the things I am wiser to know:Idleness, sorrow, a friend, and a foe.Four be the things I'd been better without:Love, curiosity, freckles, and doubt.Three be the things I shall never attain:Envy, content, and sufficient champagne.Three be the things I shall have till I die:Laughter and hope and a sock in the eye.
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