Which one of the following is not a biofertilizer?

1.  Rhizobium

2.  Nostoc

3.  Mycorrhiza

4.  Agrobacterium

The common nitrogen-fixer in paddy fields is:

1. Rhizobium

2. Azospirillum

3. Oscillatoria

4. Frankia

The bacteria and mould involved in the work of Alexander Fleming are :-

1. Staphylococci and Penicillium chrysogenum

2. Streptococci and Penicillium chrysogenum

3. Staphylococci and Penicillium notatum

4. Streptococci and Penicillium notatum

Name the product formed by Trichoderma polysporum and give its use.

1. Statins which are used as blood cholesterol lowering agent.

2. Cyclosporin A that is used as immunosuppressive agent.

3. Statins which are used as clot buster.

4. Cyclosporin A that is used to inhibit the enzyme responsible for cholesterol synthesis.

Which one of the following pairs is wrongly matched?

1. Detergents-Lipase

2. Alcohol-Nitrogenase

3. Fruit juice-Pectinase

4. Textile-Amylase

A genetically engineered micro-organism used successfully in the bioremediation of oil spills is a species of:

1. Pseudomonas

2. Trichoderma

3. Xanthomonas

4. Bacillus

Which one of the following pairs is wrongly matched?

1. Methanogens - Gobar gas

2. Yeast - Ethanol

3. Streptomycetes - Antibiotic

4. Coliforms - Vinegar

Curing of tea leaves is brought by the activity of:

1. bacteria

2. mycorrhiza

3. viruses

4. fungi