Trichoderma harzianum has proved a useful microorganism for:
1. Biological control of soil-borne plant pathogens
2. Bioremediation of contaminated soils
3. Reclamation of wastelands
4. Gene transfer in higher plants

Which one of the following pairs is wrongly matched?  
1. Textile - amylase 
2. Detergents - lipase
3. Alcohol - nitrogenase
4. Fruit juice - pectinase 

Which of the following is not used as a biopesticide?  
1. Xanthomonas campestris 
2. Bacillus thuringiensis
3. Trichoderma harzianum
4. Nucleopolyhedrovirus 

Select the correct statement from the following: 
1. Biogas commonly called gobar gas is pure methane
2. Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria
3. Biogas is produced by the activity of aerobic bacteria on animal waste
4. Methanobacterium is an aerobic bacterium found in rumen of cattle
 

A common biocontrol agent for the control of plant diseases is  
1. Trichoderma 
2. Baculovirus
3. Bacillus thuringiensis
4. Glomus 

The common nitrogen fixer in paddy fields is:

An example of endomycorrhiza is:

The most common substrate used in distilleries for the production of ethanol is    
1. Molasses
2. Corn meal
3. Soya meal
4. Ground gram 

Ethanol is commercially produced through a particular species of 
1. Aspergillus
2. Saccharomyces
3. Clostridium
4. Trichoderma 

Which one of the following is not a biofertilizer? 
1. Mycorrhiza
2. Agrobacterium
3. Rhizobium
4. Nostoc