NEET 2025 Zoology Chordates Assertion Reason Question
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:
Both A and R are true and R is the correct explanation of A
Both A and R are true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
Correct Answer
Detailed Explanation
Both statements are true. All vertebrates are chordates, but not all chordates develop a vertebral column. The reason correctly explains the transition from notochord to vertebral column in vertebrates.
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