Which of the following statements about methanogens is not correct?
1. | They can be used to produce biogas. |
2. | They are found in the rumen of cattle and their excreta. |
3. | They grow aerobically and breakdown cellulose-rich food. |
4. | They produce methane gas. |
Among the following pairs of microbes, which pair has both the microbes that can be used as biofertilizers?
1. Aspergillus and Rhizopus
2. Rhizobium and Rhizopus
3. Cyanobacteria and Rhizobium
4. Aspergillus and Cyanobacteria
For a biocontrol agent to be part of an integrated pest management, it should be:
1. | species-specific and symbiotic |
2. | free living and broad spectrum |
3. | narrow spectrum and symbiotic |
4. | species-specific and inactive on non-target organisms |
Match the following :
(a) |
Lactobacillus |
(i) |
Cheese |
(b) |
Saccharomyces cerevisiae |
(ii) |
Curd |
(c) |
Aspergillus niger |
(iii) |
Citric Acid |
(d) |
Acetobacter aceti |
(iv) |
Bread |
(v) |
Acetic acid |
Options: | (a) | (b) | (c) | (d) |
1. | (ii) | (i) | (iii) | (v) |
2. | (ii) | (iv) | (v) | (iii) |
3. | (ii) | (iv) | (iii) | (v) |
4. | (iii) | (iv) | (v) | (i) |
Which of the following is a commercial blood cholesterol-lowering agent?
1. | Lipase | 2. | Cyclosporin A |
3. | Statin | 4. | Streptokinase |
Select the correct group of biocontrol agents:
1. Nostoc, Azospirillum, Nucleopolyhedrovirus
2. Bacillus thuringiensis. Tobacco mosaic virus, Aphids
3. Trichoderma, Baculovirus, Bacillus thuringiensis
4. Oscilatoria, Rhizobium, Trichoderma
Which of the following can be used as biocontrol agent in the treatment of plant disease?
1. Lactobacillus
2. Trichoderma
3. Chlorella
4. Anabaena
Which one of the following pairs is wrongly matched?
1. Methanogens - Gobar gas
2. Yeast - Ethanol
3. Streptomycetes - Antibiotic
4. Coliforms - Vinegar
1. bioremediation of contaminated soils
2. reclamation of wastelands
3. gene transfer in higher plants
4. biological control of soil-borne plant pathogens
Which one of the following pairs is wrongly matched?
1. Detergents-Lipase
2. Alcohol-Nitrogenase
3. Fruit juice-Pectinase
4. Textile-Amylase