STD 12 - 8. microbes in human welfare — Biology STD 12 Science — Question
CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 8. microbes in human welfare1 Mark
MCQ
Organisms called methanogens are most abundant in a
A
sulphur rock
✓
cattle yard
C
polluted stream
D
hot spring.
✓
Answer
Correct option: B.
cattle yard
b (b) : Methanogens are any of various archaebacteria that produce methane; they include genera such as Methanobacillus and Methanothrix. Methanogens are obligate anaerobes found in oxygen deficient environments, such as marshes, swamps, sludge and the digestive systems of ruminants. They are also utilised in gobar gas plants.
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