Q. No.
| A | B | |
| 1. | SarsCoV2 | HIV |
| 2. | HIV | SarsCoV2 |
| 3. | HSV 1 | HSV 2 |
| 4. | HBV | HAV |
Yeast is unique amongst the members of Kingdom Fungi because it:
1. reproduces by ascospores
2. is unicellular
3. does not have a chitinous cell wall
4. does not have a sexual mode of reproduction
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A fungus used extensively in biochemical and genetic work is:
| 1. | Neurospora | 2. | Trichoderma |
| 3. | Paecilomyces | 4. | Streptomyces |
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Contagium vivum fluidum was proposed by
| 1. D. J. Ivanowsky | 2. M. W. Beijerinek |
| 3. Stanley | 4. Robert Hooke |
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Viruses are non-cellular organisms but replicate themselves once they infect the host cell. To which of the following kingdom do viruses belong?
| 1. Monera | 2. Protista |
| 3. Fungi | 4. None of the above |
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Which statement is wrong for viruses
1. All are parasites
2. All of them have helical symmetry
3. They have ability to synthesize nucleic acids and proteins
4. Antibiotics have no effect on them
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Identify the incorrectly matched pairs:
I. Louis Pasteur: Gave the name virus
II. D. J Ivanowsky: Recognized the causal agents of mosaicism in tobacco to be larger than bacteria
III. M. W. Beijerinek: Contagium vivum fluidum
IV. W. M. Stanley: Discovered HIV
| 1. | I and III | 2. | I and II |
| 3. | III and IV | 4. | II and IV |
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In general, the viruses that infect plants have:
| 1. | Single stranded RNA | 2. | Single stranded DNA |
| 3. | Double stranded RNA | 4. | Double stranded DNA |
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Which of the following viruses has both DNA and RNA as its genetic material?
| 1. | Retroviruses | 2. | Bacteriophages |
| 3. | Plant viruses | 4. | None |
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Viruses are:
1. Obligate intracellular parasites
2. Obligate extracellular parasites
3. Facultative parasites
4. Free living, outside a living cell
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