Assertion: Methanogens are obligate anaerobes.
Reason: Halophiles are salt loving bacteria.
(a) If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
(c) If Assertion is true but Reason is false.
(d) If both Assertion and Reason are false.

Dear student,
Please find below the answer:

The correct option is (b).
Methanogens are obligate anaerobes. They are used in biogas fermenters to produce methane. e.g. Methanobacterium, Methanococcus, etc.
Halophiles are salt-loving bacteria as they live in environments with a very high salt concentration.

Hope this information clears your doubt.
Regards.
 

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