Q. No.The stem rust of wheat is caused by:
1. Pucciniagraminis
2. Ustilagotritici
3. Alternariasolani
4. Colletotrichumfalcatum
1. Pucciniagraminis
2. Ustilagotritici
3. Alternariasolani
4. Colletotrichumfalcatum
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Which of the following is not a feature of the members of the class Basidiomycetes?
1. Branched and septate mycelium
2. Asexual spores are generally not formed
3. Vegetative reproduction not seen
4. Dikaryon stage commonly seen
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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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