Biology · PYQ NEET UG 2025

Given 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 vertebrate. Reason (R) : The members of subphylum vertebrata possess notochord during the embryonic period, the notochord is replaced by a cartilaginous or bony vertebral column in adults. In the light of the above statements, choose the correct answer from the options given below :

1. A
   Both A and R are true and R is the correct explanation of A
2. B
   Both A and R are true but R is not the correct explanation of A
3. C
   A is true but R is false
4. D
   A is false but R is true