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Q. No.Identify the incorrect statement:
1. Viruses are obligate parasites
2. Prions are abnormally folded infectious proteins
3. Viroids are free RNA and lack a protein coat
4. Lichens grow very well in polluted areas
Subtopic: Lichens |
91%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Group of protozoans | Example | ||
| A. | Amoeboid | P. | Entamoeba |
| B. | Flagellated | Q. | Paramecium |
| C. | Ciliated | R. | Trypanosoma |
| D. | Sporozoan | S. | Plasmodium |
| A | B | C | D | |
| 1. | Q | S | P | R |
| 2. | S | Q | R | P |
| 3. | P | R | Q | S |
| 4. | R | P | S | Q |
Subtopic: Protozoa |
91%
From NCERT
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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 |
59%
From NCERT
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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%
From NCERT
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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 |
72%
From NCERT
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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%
From NCERT
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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 |
79%
From NCERT
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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 |
75%
From NCERT
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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%
From NCERT
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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 |
91%
From NCERT
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