Q. No.Phylogenetic classification is based on:
1.
Morphological similarities
2.
Physiological similarities
3.
Reproductive similarities
4.
Evolutionary relationships
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The body of Euglenoids is flexible because of presence of:
1. a cell wall made up of pseudopeptidoglycan
2. a protein rich pellicle and absence of cell wall
3. a phosphate ether bonding in phospholipids in cell membrane
4. lipopolysaccharide layer in the outer cell wall
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Which of the following is not a viral disease?
| 1. | Influenza | 2. | Yellow fever |
| 3. | Japanese encephalitis | 4. | Kala azar |
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As a group the most extensive metabolic diversity is shown by:
| 1. Bacteria | 2. Protista |
| 3. Fungi | 4. Animals |
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Halophiles are archaebacteria adapted to extreme:
| 1. | Hot habitats | 2. | Saline habitats |
| 3. | Marshy habitats | 4. | Cold habitats |
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Methanogens are commonly present in:
1. Alimentary canal of the lower invertebrates
2. Symbiotic relationships with xerophytic plants
3. Gut of ruminant animals
4. Close associations with corals
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Chemosynthestic autotrophic bacteria:
I. Produce ATP by oxidizing inorganic substances
II. Play a great role in recycling nutrients like nitrogen, phosphorus, iron and sulfur
| 1. Both I and II are correct | 2. Only I is correct |
| 3. Only II is correct | 4. Both I and II are incorrect |
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Identify the incorrect statement regarding true bacteria?
| 1. | As a group, they exhibit maximum metabolic diversity. |
| 2. | Chemosynthetic autotrophic bacteria play a great role in recycling nutrients like nitrogen, phosphorous, iron and sulphur. |
| 3. | Heterotrophic bacteria are the most abundant in nature. |
| 4. | Bacteria reproduce mainly by fission but sometimes under favourable conditions, they produce spores. |
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In Whittaker’s Five Kingdom classification, heterotrophic mode of nutrition is present in members of:
| 1. | Two kingdoms | 2. | Three kingdoms |
| 3. | Four kingdoms | 4. | Five kingdoms |
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Which of the following plant diseases in not caused by a fungus?
1. Late blight of potato
2. Loose smut of wheat
3. Canker in citrus
4. Powdery mildew of grape vine
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