Q. No.In the symbiotic relation lichen, the mycobiont does not:
1. prepare food for the other partner
2. provide shelter to the other partner
3. absorb mineral nutrients for the other partner
4. absorb water for the other partner
1. prepare food for the other partner
2. provide shelter to the other partner
3. absorb mineral nutrients for the other partner
4. absorb water for the other partner
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Which group of bacteria are important decomposers, helpful in production of antibiotics and curd from milk and fix nitrogen in legume plants?
1. Photosynthetic autotrophs
2. Chemosynthetic autotrophs
3. Heterotrophs
4. Methanogens
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The following are not mentioned in the five kingdom classification of Whittaker except:
1. Viruses
2. Viroids
3. Euglena
4. Lichens
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Potato Spindle Tuber Disease is caused by a pathogen that is:
| 1. | A nucleocapsid |
| 2. | A low molecular weight free RNA |
| 3. | An abnormally folded protein |
| 4. | A protozoan |
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Prion is:
1. A nucleocapsid
2. A low molecular weight free RNA
3. An abnormally folded protein
4. A protozoan
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The term ‘blue mould’ is generally used for a fungus of the genus:
1. Mucor
2. Rhizopus
3. Albugo
4. Penicillium
Identify the incorrectly matched pairs:
| I: | Louis Pasteur: Gave the name virus |
| II: | D. J Ivanowsky: Recognized the causal agents of mosaicism in tobacco to be larger than bacteria |
| III: | M. W. Beijerinck : Contagium vivum fluidum |
| IV: | W. M. Stanley: Discovered HIV |
2. I and II
3. III and IV
4. II and IV
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Which of the following is not a characteristic of dinoflagellates?
| 1. | Mostly fresh water and photosynthetic |
| 2. | Cell wall with stiff cellulosic plates |
| 3. | Two flagella |
| 4. | Various colored pigments in the cell |
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The chief producers in the oceans are:
| 1. | Floating hydrophytes | 2. | Blue green algae |
| 3. | Desmids | 4. | Diatoms |
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