Which one of the following statements is totally wrong about the occurrence of notochord,while the other three are correct?

  • A
    It is present only in larval tail in ascidian.
  • B
    It is replaced by a vertebral column in adult frog.
  • C
    It is absent throughout life in humans from the very beginning.
  • D
    It is present throughout life in Amphioxus.

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Similar Questions

The group $Amniota$ includes:

Observe the following simplified scheme of the division $Vertebrata$ and choose the correct option that matches with the letters given in the boxes.
$Vertebrata$ (Division)
- $p$ (Lacks jaw)
- $q$ (Bears jaw)
- Super class
- $r$ (Bear fins)
- $s$ (Bear limbs)

Select the incorrect option for vertebrates:

All chordates at one or the other stage possess

Which of the following organisms possess an endoskeleton?

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