Question

In which of the following notochord is present in embryonic stages?

• A. All chordates
• B. Few chordates
• C. Only vertebrates
• D. Non-chordates

Answer 1

The correct option is A All chordates

The notochord is the primary axial supportive structure present in all chordate embryos as well as in many adults. In most of the higher chordates, the notochord is replaced by a vertebral column in adults.

Vertebrates come under the category of chordates.

Non-chordates do not have a notochord.

So, the correct answer is option A.