From which plants did $D.J. Ivanowsky$ discover viruses?
- AMaize
- BTobacco
- CSugarcane
- DSunflower
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Which organisms are sensitive to $SO_2$ pollution?
Easy
View SolutionViruses that infect bacteria,multiply and cause their lysis,are called
Assertion $(S)$: Viruses can pass through bacteria-proof filters.
Reason $(R)$: Viruses are extremely small in size.
Reason $(R)$: Viruses are extremely small in size.
Medium
View SolutionMatch the column $I$ with column $II$:
Particles/Microorganisms Diseases $(i)$ Viroid $(a)$ $\text{CJD}$ $(ii)$ Virus $(b)$ Citrus canker $(iii)$ Bacteria $(c)$ Potato spindle tuber disease $(iv)$ Prion $(d)$ Mumps
| Particles/Microorganisms | Diseases |
|---|---|
| $(i)$ Viroid | $(a)$ $\text{CJD}$ |
| $(ii)$ Virus | $(b)$ Citrus canker |
| $(iii)$ Bacteria | $(c)$ Potato spindle tuber disease |
| $(iv)$ Prion | $(d)$ Mumps |
Medium
View SolutionCaulimo viruses $(Cauliflower\, mosaic\, virus)$ are a group of viruses which have:
Easy
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