Question

Which of the following is a distinct chordate character?

• A. Chorda dorsalis
• B. Cephalization
• C. Claws
• D. None of the above

Answer 1

The correct option is A Chorda dorsalis

'Chorda dorsalis' also known as notochord. It is a cylindrical cord of cells on the dorsal aspect of an embryo, making its longitudinal axis, the common factor of all chordates. It is the center of development of the axial skeleton. It is located as an elastic rod with original chordates and at early stages of development of vertebrates at the back (dorsal) between the neural tube and the intestine.

So, the correct answer is option A.