Consider the following regarding the reasons for the fact that now Cyanobacteria are kept in Monera and not in Plantae:

I. They are prokaryotes.

II. The cell wall of cyanobacteria has peptidoglycan.

III. They can fix atmospheric nitrogen

The Corrcet explanations would be:

1. I and II only

2. I and III only

3. II and III only

4. I, II and III

The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the

(1) thermoacidophiles

(2) methanogens

(3) eubacteria

(4) halophiles

The guts of a cow and a buffalo possess:

1. Fucus sp
2. Chlorella sp
3. methanogens
4. cyanobacteria

Bacillus, Coccus, Vibrio, and Spirillum are four basic shapes of:-

1. Bacteria

2. PPLO

3. Mycoplasma

4. Both (2) and (3)

Match the organisms in Column-I with habitats in Column-II.

Select the correct answer from the options given below:

Which of the following is not archaebacteria?

Bacterial structure and behaviour are respectively:-

1. Simple, Simple

2. Complex, Simple

3. Simple, Complex

4. Complex, Complex

Hot spring hosts which kind of archaebacteria?

Which of the following are found in extreme saline conditions?

1. Archaebacteria

2. Eubacteria

3. Cyanobacteria

4. Mycobacteria

Organisms called Methanogens are most abundant in a

(1) cattle yard

(2) polluted stream

(3) hot spring

(4) sulphur rock