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

The motile bacteria are able to move by:

1. fimbriae

2. flagella

3. cilia

4. pili

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 molds

4. Blue-green algae

Which statement is wrong for viruses?

Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group?