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NEET2020BotanyAnimal KingdomActual

Which of the following has notochord throughout life?

Options

  1. ABirds
  2. BFish
  3. CSnake
  4. DAmphioxus

Correct answer

D. Amphioxus

Step-by-step solution

In Cephalochordates, the notochord is persistent throughout life, and Amphioxus or Lancelet is an example of Cephalochordata. In vertebrates, the notochord is present only during the embryonic stage. In Adults, the notochord is replaced by the vertebral column.

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