Biology · BIOLOGICAL CLASSIFICATION

Match List-I with List-II: List-I (Scientist) List-II (Key Discovery / Concept) A Dmitri Ivanowsky I Demonstrated that fluid extract from infected tobacco plants could infect healthy plants (Contagium vivum fluidum) B M.W. Beijerinek II Discovered free infectious low-molecular-weight RNA causing potato spindle tuber disease lacking a protein coat C W.M. Stanley III Showed that viruses could be crystallised and consist largely of proteins D T.O. Diener IV Recognized that microbes causing mosaic disease of tobacco pass through bacteria-proof filters Choose the correct answer from the options given below:

1. A
   A-I, B-IV, C-II, D-III
2. B
   A-III, B-II, C-IV, D-I
3. C
   A-IV, B-I, C-III, D-II
4. D
   A-IV, B-III, C-I, D-II