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Q. No.Identify the incorrect statement regarding heterotrophic bacteria?
1.
They are most abundant bacteria in nature
2.
Many of them are important decomposers
3.
They play a great role in recycling nutrients like nitrogen, phosphorus, iron and sulphur
4.
They are helpful in making curd from milk, production of antibiotics, fixing nitrogen in legume roots, etc.
Subtopic: Kingdom Monera: Bacterial Classification |
61%
Level 2: 60%+
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An intervening dikaryophase is seen during the sexual reproduction in members of the fungal class:
1. Phycomycetes and Ascomycetes
2. Ascomycytes and Basidiomycetes
3. Basidiomycetes and Deuteromycetes
4. Phycomycetes and Deuteromycetes
1. Phycomycetes and Ascomycetes
2. Ascomycytes and Basidiomycetes
3. Basidiomycetes and Deuteromycetes
4. Phycomycetes and Deuteromycetes
Subtopic: Kingdom Fungi: Introduction |
90%
Level 1: 80%+
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Abnormally folded infectious proteins can, in humans, cause:
1. Mad cow disease
2. Scrapie
3. Creutzfeldt-Jacob disease
4. MERS
1. Mad cow disease
2. Scrapie
3. Creutzfeldt-Jacob disease
4. MERS
Subtopic: Virus, Viroids & Prions |
73%
Level 2: 60%+
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Methanogens, present in the gut of several ruminants, are:
1. Archaebacteria
2. Photosynthetic autotrophic bacteria
3. Chemoheterotroph eubacteria
4. Chemosynthetic eubacteria
1. Archaebacteria
2. Photosynthetic autotrophic bacteria
3. Chemoheterotroph eubacteria
4. Chemosynthetic eubacteria
Subtopic: Kingdom Monera: Bacterial Classification |
91%
Level 1: 80%+
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Hyphae, that are continuous tubes filled with multinucleated cytoplasm, are seen in the members of:
1. Ascomycetes
2. Phycomycetes
3. Deuteromycetes
4. Basidiomycetes
1. Ascomycetes
2. Phycomycetes
3. Deuteromycetes
4. Basidiomycetes
Subtopic: Kingdom Fungi: Introduction |
80%
Level 1: 80%+
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Viruses:
1. contain both DNA and RNA as genetic material
2. are facultative parasites
3. cannot be crystallized
4. are nucleoproteins
1. contain both DNA and RNA as genetic material
2. are facultative parasites
3. cannot be crystallized
4. are nucleoproteins
Subtopic: Virus, Viroids & Prions |
76%
Level 2: 60%+
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Generally, the shape not seen in a bacterial cell is:
1. Rod like
2. Comma shaped
3. Spherical
4. Icosahedral
1. Rod like
2. Comma shaped
3. Spherical
4. Icosahedral
Subtopic: Kingdom Monera: Introduction |
95%
Level 1: 80%+
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All the following statements regarding diatoms are true except:
| 1. | The two overlapping shells of cell wall fit together as in a soap box. |
| 2. | They are the chief ‘producers’ in the oceans. |
| 3. | Their cell walls are embedded with silica. |
| 4. | Diatoms behave like heterotrophs when deprived of sunlight. |
Subtopic: Kingdom Protista: Chrysophytes |
90%
Level 1: 80%+
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Kingdom Protista has brought together Chlamydomonas, Chlorella with Paramoecium and Amoeba. On what basis were these organisms separated under previous classification systems?
1. Cell wall
2. Cell type
3. Body organisation
4. Mode of nutrition
1. Cell wall
2. Cell type
3. Body organisation
4. Mode of nutrition
Subtopic: Different Classification Systems |
59%
Level 3: 35%-60%
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Which of the following statements is incorrect regarding Mycoplasma?
| 1. | These organisms are naturally resistant to antibiotics that inhibit protein biosynthesis |
| 2. | These organisms are naturally resistant to antibiotics that target the cell wall |
| 3. | These organisms are naturally resistant to antibiotics that inhibit DNA replication |
| 4. | These organisms are naturally resistant to antibiotics that inhibit folic acid metabolism |
Subtopic: Kingdom Monera: Actinomycetes & Mycoplasma |
60%
Level 2: 60%+
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