Curing of tea leaves is brought about by the activity of
bacteria
mycorrhiza
viruses
viruses
A.
bacteria
Curing of tea levels is brought about by the activity of bacteria. It is essentially an oxidation dry fermentation process, during which, water is driven off, the green colour is lost and the leaves assume a tougher texture and undergo chemical changes.
Mycorrhiza is a mutually beneficial association between fungi and the roots of higher plants. Viruses and fungi are not involved in the curing process of tea leaves.
Gas gangrene is caused by
Clostridium botulinum
Xanthomonas campestris
Pseudomonas
Clostridium perfringens
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
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
The bacterium (Clostridium botulinum) that causes botulism is
a facultative anaerobe
an obligate anaerobe
a facultative aerobe
a facultative aerobe
Which one of the following microbes is the source for vitamin-C?
Pseudomonas sp.
Acetobacter sp.
Aspergillus sp.
Chlorella
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
Which one of the following pairs is wrongly matched?
methanogens - gobar gas
yeast - ethanol
streptomycetes - antibiotic
streptomycetes - antibiotic
