Q. No.Archaebacteria differ from eubacteria in:
1.
Cell membrane structure
2.
Mode of nutrition
3.
Cell shape
4.
Mode of reproduction
Which of the following shows coiled RNA strand and capsomeres?
| 1. | Poliovirus | 2. | Tobacco mosaic virus |
| 3. | Measles virus | 4. | Retrovirus |
Viruses have:
1. DNA enclosed in a protein coat
2. Prokaryotic nucleus
3. Single chromosome
4. Both DNA and RNA
A location with luxuriant growth of lichens on the trees indicates that the:
1. Trees are very healthy
2. Trees are heavily infested
3. Location is highly polluted
4. Location is not polluted
Which one of the following living organisms completely lacks a cell wall?
1. Cyanobacteria
2. Sea- fan (Gorgonia)
3. Saccharomyces
4. Coelenterata algae
Select the wrong statement:
| 1. | Anisogametes differ either in structure, function or behaviour |
| 2. | In Oomycetes, the female gamete is smaller and motile, while the male gamete is larger and non-motile |
| 3. | Chlamydomonas exhibits both isogamy and anisogamy and Focus shows oogamy |
| 4. | Isogametes are similar in structure, function and behaviour |
Which of the following are likely to be present in deep sea water?
1. Eubacteria
2. Blue-green algae
3. Saprophytic fungi
4. Archaebacteria
The most abundant prokaryotes helpful to human in making curd from milk and in production of antibiotics are the ones categorized as:
1. Cyanobacteria
2. Archaebacteria
3. Chemosynthetic autotrophs
4. Heterotrophic bacteria
The cyanobacteria are also referred to as:
1. Protists
2. golden algae
3. Slime moulds
4. Blue-green algae
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