A : Echinoderms are the only radially symmetr | vedclass

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(B) Assertion is true: Echinoderms are the only radially symmetrical animals that possess a true coelom.Reason is also true: Echinoderms exhibit secon

Vedclass · Accepted Answer

Assertion and Reason both are correct but Reason is not the correct explanation of Assertion.

Vedclass · Answer

(B) Assertion is true: Echinoderms are the only radially symmetrical animals that possess a true coelom.Reason is also true: Echinoderms exhibit secondary radial symmetry. This means that their larval stages are bilaterally symmetrical,but they develop radial symmetry as adults.Conclusion: While both statements are scientifically accurate,the fact that they adapted to radial symmetry secondarily does not explain why they are the only radially symmetrical animals with a true coelom. Therefore,the Reason is not the correct explanation for the Assertion.

$A$ : Echinoderms are the only radially symmetrical animals with true coelom.
$R$ : Echinoderms have secondarily adapted to radial symmetry.

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$A$ : Echinoderms are the only radially symmetrical animals with true coelom.$R$ : Echinoderms have secondarily adapted to radial symmetry.