Sample |
BOD Value |
Type of Sample |
A → B → C → |
20 mg / It → 8 mg / It → 400 mg / It → |
Secondary effluent River water Untreated sewage water |
1. Anabaena, a cyanobacterium increases the fertility, enriches soil with organic material and fixes nitrogen.
2. Rhizobium also fix atmospheric nitrogen as nitrates and nitrites and lives as a symbiont in the roots of leguminous plants.
3. Mycorrhizae formed by association of bacteria and roots of higher plants increase soil fertility.
Biogas, Citric acid, Penicillin and Curd.
2. Biogas. It is an ecofriendly gas which is used as a fuel. The slurry produced by its production is used as a manure.
3. Citric acid. It is used as preservative in many food items.
4. Curd. It is a dairy product which is a rich source of vitamin B12.
Find out the name of the microbes from which Cyclosporin A (an immunosuppressive drug) and Statins (blood cholesterol lowering agents) are obtained.
2. Statin is produced by Aspergillus.
(a) Single cell protein (SCP) (b) Soil.
(b) Soil- Microbes in the soil play an important role in increasing the fertility of the soil. Microbes breakdown the oraganic materials and enrich the soil with nutrients. Rhizobium is a symbiotic bacteria which helps to fix nitrogen in leguminous plants.