Question

Viroids haveA. single stranded RNA not enclosed by protein coatB. single stranded DNA enclosed by protein coatC. double stranded DNA enclosed by protein coatD. double stranded RNA not enclosed by protein coat

Answer 1

Viroids are single stranded RNA without protein coat. They are the smallest known infectious pathogen. Discovered by Theodor Otto Diener a plant pathologist at the U.S Department of Agriculture's Research Center in Maryland.

Potato spindle tuber viroid was the first to be recognised and studied in the 1970’s causing the potato spindle tuber disease mainly in potatoes and tomatoes.

Although viroids are composed of nucleic acid, they do not code for any protein.

Answer 2

Answer:

B. single stranded DNA enclosed by protein coat

Explanation:

Viroids are the smallest infectious pathogens known. They are composed solely of a short strand of circular, single-stranded RNA that has no protein coating.