Q. Match the column-I with column-ll and choose correct option
Column I Column II
A. Prions i. Free infectious RNA
B. Viroid ii. Protein
C. Gemini viruses iii. Single stranded RNA
D. Retroviruses iv. Single stranded DNA

Options:

 1397  220 Biological Classification Report Error

Solution:

Correct answer is (b) (A)-(ii), (B)-(i), (C)-(iv), (D)-(iii)