Question

2. Which of the following
have notochord throughout life?​

Answer 1

Answer:

All "animals with notochord" are called as Chordates. In some chordates namely, snakes, fish and bird, the notochord is replaced by vertebral column whereas in case of amphioxus, it is present throughout the life period.

Answer 2

Explanation:

All "animals with notochord" are called as Chordates. In some chordates namely, snakes, fish and bird, the notochord is replaced by vertebral column whereas in case of amphioxus, it is present throughout the life period..