Botany - Biological Classification Question with Solution | TestHub
BotanyBiological ClassificationViruses, Viroids and PrionsEasy2 minPYQ_2020
BotanyEasysingle choice
Match the scientists present in columns I with their contribution in column II, and choose the correct combination from the options given.
| Column I | Column II | ||
| (Scientists) | (Contribution) | ||
| a. | Ivanowsky | 1. | Contagium vivum fluidum |
| b. | Pasteur | 2. | Crystallization of viruses |
| c. | Beijerinck | 3. | Discovery of viruses |
| d. | Stanley | 4. | Term virus |
Options:
Answer:
C
Solution:
The term virus means venom or poisonous fluid, this term was given by Pasteur. D.J. Ivanowsky discovered certain microbes as a causal organism of the mosaic disease of tobacco, which is smaller than bacteria and can pass through bacteria-proof filters. M.W. Beijerinck told that the extract of the infected tobacco plants could cause infection in healthy plants and called the fluid as "contagium vivum fluidum" (infectious living fluid). W.M. Stanley crystallized them and these crystals were mainly consisting of proteins.
Stream:NTA_ABHYAS_NEETSubject:BotanyTopic:Biological ClassificationSubtopic:Viruses, Viroids and Prions
⏱ 2mℹ️ Source: PYQ_2020
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