A: Annelids,arthropods,and molluscs are proto | vedclass

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(B) Assertion is true: Annelids,arthropods,and molluscs are indeed protostomial coelomates,meaning the blastopore develops into the mouth during embry

Vedclass · Accepted Answer

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

Vedclass · Answer

(B) Assertion is true: Annelids,arthropods,and molluscs are indeed protostomial coelomates,meaning the blastopore develops into the mouth during embryonic development.Reason is also true: Members of these three phyla exhibit bilateral symmetry and possess a true coelom (eucoelomates).However,the fact that they have bilateral symmetry and a true coelom does not explain why they are classified as protostomes. Therefore,the Reason is not the correct explanation for the Assertion.

$A$: Annelids,arthropods,and molluscs are protostomial coelomates.
$R$: All three phyla include members with bilateral symmetry and a true coelom.

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$A$: Annelids,arthropods,and molluscs are protostomial coelomates.$R$: All three phyla include members with bilateral symmetry and a true coelom.