Q. 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 vertebrates. Reason (R): Notochord is replaced by vertebral column in the adult vertebrates In the light of the above statements, choose the correct answer from the options given below.
A) (A) is not correct but (R) is correct
B) Both (A) and (R) are correct and (R) is the correct explanation of (A)
C) Both (A) and (R) are correct but (R) is not the correct explanation of (A)
D) (A) is correct but (R) is not correct
Explanation
[Solution] Vertebrates have a notochord in the embryo that is replaced by a vertebral column in adults, which explains why they are chordates yet not all chordates are vertebrates. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.