Question

Which among the following is incorrect about Vertebrata?

(a) All chordates are vertebrates

(b) In vertebrates, notochord is replaced by vertebral column in adults

(c) They might not have post-anal tail after a certain period of time

(d) Notochord is present during embryonic period

I have been asked this question in semester exam.

I'm obligated to ask this question of Classification of Animal Kingdom into Different Phylum-2 topic in chapter Animal Kingdom of Biology – Class 11

Answer 1

The correct choice is (a) All chordates are vertebrates

To elaborate: All vertebrates are chordates but the vice-versa is not true. Notochord is present during embryonic period. It is replaced by vertebral column in adults. They might also not have post-anal tail after a certain period of time.