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 

An organism used as biofertilizer for raising soyabean crop is 
1. Nostoc
2. Azotobacter
3. Azospirillum
4. Rhizobium 

Which one of the following helps in the absorption of phosphorus from soil by plants?   
1. Anabaena
2. Glomus
3. Rhizobium
4. Frankia