Assertion :Caecum is a small blind sac which hosts some symbiotic microorganisms. Reason: Escherichia coli in return produces vitamin B $_{12}$ vitamin K, thiamine and riboflavin.

Both assertion and reason are true and reason is the correct explanation of assertion.

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Both assertion and reason are true but reason is not the correct explanation of assertion.

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Assertion is true but reason is false.

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Both assertion and reason are false.

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Solution

The correct option is A Both assertion and reason are true and reason is the correct explanation of assertion.
The caecum is the pouch connected to the junction of the small and large intestine and has several microorganisms, E. coli produces vitamin k and vitamin-B complexes.
So, the correct option is 'both assertion and reason are true and reason is the correct explanation of assertion.'

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Assertion :Caecum is a small blind sac which hosts some symbiotic microorganisms. Reason: Escherichia coli in return produces vitamin B12 vitamin K, thiamine and riboflavin.

Assertion :Caecum is a small blind sac which hosts some symbiotic microorganisms. Reason: Escherichia coli in return produces vitamin B $_{12}$ vitamin K, thiamine and riboflavin.