The guts of cow and buffalo possess
| 1. | Fucus sp | 2. | Chlorella sp |
| 3. | methanogens | 4. | cyanobacteria |
Which organisms are responsible for the production of biogas?
| 1. | Archaebacteria | 2. | Eubactetia |
| 3. | Mycoplasma | 4. | Protists |
| 1. | is a resting spore |
| 2. | is involved in nitrogen fixation |
| 3. | is gas vacuole |
| 4. | is where carbon dioxide concentration mechanism is applied |
Match the organisms in Column I with habitats in Column II.
| Column I | Column II | ||
| (a) | Halophiles | (i) | Hot springs |
| (b) | Thermoacidophiles | (ii) | Aquatic environment |
| (c) | Methanogens | (iii) | Guts of ruminants |
| (d) | Cyanobacteria | (iv) | Salty areas |
Select the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (i) | (iii) | (ii) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (iii) | (iv) | (i) | (ii) |
| 4. | (ii) | (iv) | (iii) | (i) |
In which would you include Archaea and nitrogen fixing organisms in the five kingdom classification?
1. Plantae
2. Fungi
3. Monera
4. Protista
What is the principle underlying the use of cyanobacteria in agricultural fields for crop improvement?
1. Fix atmospheric nitrogen to make it available for the plants
2. Pest resistant
3. Increase the alkalinity of soil
4. None of these
Which of the following is not archaebacteria?
| 1. | Halophile | 2. | Thermoalkalophiles |
| 3. | Methanogens | 4. | Thermoacidophiles |
| 1. | Oxidize various inorganic substances such as nitrates and ammonia and use the released energy for their ATP production |
| 2. | Play a great role in recycling nutrients like nitrogen, phosphorus, iron and sulphur |
| 3. | Both 1 and 2 |
| 4. | Can evolve oxygen during photosynthesis |