Time: 30 Minute
Nostoc
Spirogyra
Azotobacter
Anabaena
Marsilea
Azolla
Ophioglossum
Adiantum
Very expensive
Toxic
Self perpetuating
Polluting
Symbiotic N2 fixers
Non-symbiotic N2 fixer
Pathogenic bacteria
Decomposers
Biological control
Confusion technique
Pesticides
None of these
Lactic acid fungi
Lactic
Acetic acid fungi
Acetic acid Bacteria
Aspergillus niger
Aspergillus wentii
Aspergillus megaterium
Both a and b
Primary treatment
Secondary treatment
Tertiary treatment
None of these
Bacterum thuringiensis
Bacterium thuringensis
Bacillus turingenses
Bacillus thuringiensis
harm
Spoilage
Eutrophication
Eutrophism
Mycelium
Mycorrhiza
Helotism
None of these
Biochemical oxygen demand
Biophysical oxygen demand
Biological oxygen demand
All of these
Lactic acid
Acetic acid
Citric acid
Butyric acid
Bio microbial action
Bio contro
Bio care
None of these
Chemical fertilizers
N-P-K fertilizers
Bio fertilizers
All of these