Assertion :Monerans are most primitive. Reason: Monerans show presence of nucleus.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is C Assertion is correct but Reason is incorrect.
The kingdom monera is comprised of prokaryotic organisms. These organisms are further classified into archaebacteria, bacteria, and cyanobacteria. These are primitive forms of prokaryotic organisms. They are unicellular. They do not have well-developed cell organelles such as nuclear membrane, nucleus, mitochondria, etc.
Thus, the correct answer is option C.

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