Q. No.Prion is:
1. A nucleocapsid
2. A low molecular weight free RNA
3. An abnormally folded protein
4. A protozoan
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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The correct chronology of the steps seen in the sexual cycle in fungi will be:
1. Plasmogamy – Karyogamy – Meiosis in zygote
2. Karyogamy – Plasmogamy – Meiosis in zygote
3. Plasmogamy – Meiosis in zygote – Karyogamy
4. Karyogamy – Meiosis in zygote – Plasmogamy
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Deuteromycetes are also called as Fungi imperfecti because:
1. They do not have a thalloid body
2. They can contain chlorophyll
3. There are no parasitic members
4. Sexual phases are not known
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A ‘dikaryon’ stage is seen in the members of:
1. Ascomycetes and Phycomycetes
2. Ascomycetes and Basidiomycetes
3. Basidiomycetes and Phycomycetes
4. Basidiomycetes and Deuteromycetes
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Consider the following two statements:
I. Lichens are very good pollution indicators
II. In the presence of pollution, the lichens show profuse growth
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect
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