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Which one of the following statements is totally wrong about the occurrence of notochord?

  1. A
    It is absent throughtout life in humans from the very beginning.
  2. B
    It is present througout life in .
  3. C
    It is present only in larval tail in Ascidians.
  4. D
    It is replaced by a vertebral column in adult frog.

Solution & Step-by-step Explanation

Humans are chordates. The notochord is present during embryonic development in all chordates. In vertebrates like humans, it is later replaced by the vertebral column.

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Which one of the following statements is totally wrong about the occurrence of notochord?
A
It is absent throughtout life in humans from the very beginning.
B
It is present througout life in .
C
It is present only in larval tail in Ascidians.
D
It is replaced by a vertebral column in adult frog.

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Animal KingdomChordates

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