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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.
- Viroids are the smallest known pathogens.
- Viroids are naked RNA molecules.
- Viroids autonomously replicate in host plants.
- 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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