Curing of tea leaves is brought about by the activity of

• bacteria

• mycorrhiza

• viruses

• viruses

Which of the following is correctly matched for the product produced by them?

• Acetobacter aceti : Antibiotics

• Methanobterium : Lactic acid

• Penicillium notatum : Acetic acid

• Penicillium notatum : Acetic acid

Which one of the following pairs is not correctly matched?

• VItamin B₁₂ → Pernicious anaemia

• Vitamin-B₆ → Loss of appetite

• Vitamin-B₁ →Beri-Beri

• Vitamin-B₂ → Pellagra

Roquefort cheese is ripened by using a

• type of yeast

• fungus

• bacterium

• cyanobacteria

155.

Bacterial endotoxin is

• A toxic protein that stays inside the bacterial cell

• A toxic protein that is excreted into the medium

• Lipopolysaccharide located on the surface of the bacteria

• None of the above

Pebrine is a disease of

• Fish

• Honey Bee

• Silk Worm

• lac insect

Which one of the following microbes is the source for vitamin-C?

• Pseudomonas sp.

• Acetobacter sp.

• Aspergillus sp.

• Chlorella

Gas gangrene is caused by

• Clostridium botulinum

• Xanthomonas campestris

• Pseudomonas

• Clostridium perfringens

Biological Oxygen Demand (BOD) is a measure of

• Industrial wastes poured into water bodies

• The extent to which water is polluted with an organic compound

• Amount of carbon monoxide inseparably combined with haemoglobin

• Amount of oxygen needed by green plants during the night 

Assertion : Curdling is required in the manufacture of cheese.

Reason : Lactic acid bacteria are used for the purpose.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false

• If both assertion and reason are false