Name a nitrogen-fixing bacteria
Bacillus ramosus
Nitro bacter
Nitrosomonas
Acetobacter
From which micro organisms penicillin is being manufactured?
Bacteria
Algae
Fungi
Virus
Name a good preservative.
Oxalic acid
Vinegar
Butyl alcohol
Methyl alcohol
Name the cariers of disease organisms.
Parasites
Vectors
Pathogens
Microbes
Name the species of bacteria which cause the disease 'citrus canker'
Xanthomonas citri
Xanthomonas oryzae
Pseudomonas spp
Solanacearum
Which process is used to preserve fish, meat and vegetable?
Canning
Dehydration
Heating
Refrigeration
Why are viruses very much used as biological research tools?
They have ability to pass on genetic information from one cell to another cell.
Due to their simplicity of structure and rapid multiplication.
They are used in eradicating harmful parts.
They are used to produce vaccine
Which convert complex proteins in the dead bodies of plants and animals into ammonia, nitrites and nitrates?
Name an ammonifying bacteria
Nitrobacter
Rhizobium
Clostridium
Name a unicellular, saprophytic fungus?
Yeast
Bread mould
Bacilli
Cocci
