Q. No.Which of the following are found in extreme saline conditions?
1. Archaebacteria
2. Eubacteria
3. Cyanobacteria
4. Mycobacteria
1. Archaebacteria
2. Eubacteria
3. Cyanobacteria
4. Mycobacteria
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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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Which of the following features is common to prokaryotes and many eukaryotes?
1. Chromosomes present
2. Cell wall present
3. Nuclear membrane present
4. Sub cellular organelles present
The five kingdom classification was proposed by
| 1. | R. H. Whittaker | 2. | C. Linnaeus |
| 3. | A. Roxberg | 4. | Virchow |
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Organisms living in salty are called as
1. Methanogens
2. Halophiles
3. Heliophytes
4. Thermoacidophiles
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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A dikaryon is formed when
1. Meiosis is arrested
2. The two haploid cells do not fuse immediately
3. Cytoplasm does not fuse
4. None of the above
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Contagium vivum fluidum was proposed by
| 1. | D. J. Ivanowsky | 2. | M. W. Beijerinck |
| 3. | Stanley | 4. | Robert Hooke |
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