Question

What are called viroids?

Answer 1

Viroids are the smallest infectious pathogens known. They are composed solely of a short strand of circular, single-stranded RNA without protein coat. ... This viroid is now calledPotato spindle tuber viroid, abbreviated PSTVd.

Answer 2

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Here's the answer !!

$\ \red{Viroids : }$

✔✔A tiny fragment of nucleic acid with 300 - 400 nucleotides and without a protein coat is called a viroid ✔✔

✴It is smaller than a virus and lack protein coat that is present in virus.

✴It is an infectious agent that was discovered by T.O.Diener in potato spindle tuber disease.

✴It is found to be a free RNA .

✴ The RNA is of low molecular weight.

✴Viroid can cause plant diseases on a variety of economically important plants (Ex: Tomatoes , Potatoes, cucumber, citrus)

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