Assertion :All triploblastic animals are eucoelomates except flatworms and roundworms. Reason: They have a false coelom.

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
Coelomate have a body cavity called coelom with a complete lining called peritoneum derived from mesoderm. Coelom developed in triploblasts but was subsequently lost in several lineages. Eucoelom or True coelom is a true body cavity develops entirely within the mesoderm resulting in the tube.

So the correct option is " Assertion is correct but the reason is incorrect".

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(a) Assertion and reason both are correct and reason is correct explanation of assertion.
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(d) Assertion is wrong statement but reason is correct statement.
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