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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Which of the following statements is wrong for viroids?
1. Their RNA is of high molecular weight
2. They lack a protein coat
3. They are smaller than viruses
4. They cause infections
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Viroids differ from viruses in having
1. DNA molecules with protein coat
2. DNA molecules without protein coat
3. RNA molecules with protein coat
4. RNA molecules without protein coat
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The five kingdom classification was proposed by
1. | R. H. Whittaker | 2. | C. Linnaeus |
3. | A. Roxberg | 4. | Virchow |
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Naked cytoplasm, multinucleated and saprophytic are the characteristics of
1. | Monera | 2. | Protista |
3. | Fungi | 4. | Slime molds |
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An association between roots of higher plants and fungi is called
1. | Lichen | 2. | Fern |
3. | Mycorrhiza | 4. | BGA |
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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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Mycobiont and Phycobiont are formed in
1. | Mycorrhzia | 2. | Root |
3. | Lichens | 4. | BGA |
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With respect to fungal sexual cycle, choose the correct sequence of events
1. Karyogamy, Plasmogamy and Meiosis
2. Meiosis, Plasmogamy and Karyogamy
3. Plasmogamy, Karyogamy and Meiosis
4. Meiosis, Karyogamy and Plasmogamy
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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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