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ExamsNEETBiology

Viroids, the smallest known pathogens, are naked, circular, single-stranded RNA molecules that do not encode protein but autonomously replicate when introduced into host plants. Viroids only infect plants; some cause economically important diseases of crop plants, while others appear to be benign.

  1. Viroids are the smallest known pathogens.
  2. Viroids are naked RNA molecules.
  3. Viroids autonomously replicate in host plants.
  4. All of the above.

Correct answer: All of the above.

Solution

Viroids are the smallest known pathogens, naked, circular, single-stranded RNA molecules that autonomously replicate in host plants.

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