Biology · PYQ NEET UG 2022
हिन्दीGiven below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): All vertebrates are chordates but all chordates are not vertebrates. Reason (R): Notochord is replaced by vertebral column in the adult vertebrates. In the light of the above statements, choose the most appropriate answer from the options given below:
Correct answer · Option 3
Both (A) and (R) are correct and (R) is the correct explanation of (A).
Explanation
All vertebrates possess a notochord during embryonic stage which is replaced by a vertebral column, hence they are a subphylum of Chordata. Both (A) and (R) are correct and (R) correctly explains why all vertebrates are chordates.