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Standard XII
Biology
Question

Assertion :Methanogens are present in the gut of several ruminant animals. Reason: Methanogens help in the production of methane from dung of ruminants.
  1. If both assertion and reason are true and reason is the correct explanation of assertion.
  2. If both assertion and reason are true but reason is not the correct explanation of assertion.
  3. If assertion is true but reason is false.
  4. If both assertion and reason are false.

A
If both assertion and reason are false.
B
If both assertion and reason are true and reason is the correct explanation of assertion.
C
If both assertion and reason are true but reason is not the correct explanation of assertion.
D
If assertion is true but reason is false.
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Solution
Verified by Toppr

Methanogens are bacteria that are present in the gut of several ruminant animals. They do anaerobic respiration and convert organic monomers into methane gas. But, the methanogens are present in the gut of ruminant animals to digest the carbohydrate (cellulose) ingested by animals.
Thus, both the assertion and reason are true but the reason is not the correct explanation of assertion.
So, the correct answer is (B).

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