Bacillus thuringiensis (Bt) strains have been used for designing novel:

1. Bioinsecticidal plants

2. Bio-mineralization processes

3. Biofertilizers

4. Bio-metallurgical techniques 

For retting of Jute, the fermenting microbe used is:

1. Methophilic bacteria

2. Helicobacter pylori

3. Butyric acid bacteria

4. Streptococcus lactin 

Which of the following yields citric acid?
1.  Penicillium citrinum
2. Aspergillus niger
3. Saccharomyces
4.  Azospirillium

Saccharomyces cerevisiae is used in the formation of:
1. Ethanol
2. Methanol
3. Acetic acid
4. Antibiotics

Modern farmers can increase the yield of Paddy up to 50% by the use of:
1.  Cyanobacteria
2.  Rhizobium
3.  Cyanobacteria in Azolla pinnata
4.  Farm yard manure

The most thoroughly studied of the known bacteria-plant interactions is the:
 

The dough kept overnight in warm weather becomes soft and spongy because of:

1. Fermentation

2. Cohesion

3. Osmosis

4. Absorption of carbon dioxide from the atmosphere

Which one of the following pairs is not correctly matched:

1. Serratia – Drug addiction

2. Spirulina – Single-cell protein

3. Rhizobium – Biofertilizer

4. Streptomyces – Antibiotic 

A major component of gobar gas is:

A free-living nitrogen-fixing cyanobacterium that can also form a symbiotic association with the water fern Azolla is:

1. Chlorella

2. Nostoc

3. Anabaena

4. Tolypothrix