-
Which of the following statements is wrong for viroids?
-
- They lack a protein coat
- They are smaller than viruses
- They cause infections
- Their RNA is of high molecular weight
Correct Option: D
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.
