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STD 12 - 8. microbes in human welfare — BIOLOGY STD 12 Science — Question

Rajasthan 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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