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Biology · BIOLOGICAL CLASSIFICATION
हिन्दीMatch 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:
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:
Correct answer · Option 3
A-IV, B-I, C-III, D-II
Explanation
Ivanowsky (1892) noted microbes pass through bacteria-proof filters (A-IV). Beijerinek (1898) called infectious fluid 'Contagium vivum fluidum' (B-I). Stanley (1935) crystallized viruses showing protein composition (C-III). Diener (1971) discovered viroids (D-II).
