Question

In the embryonic development of chordate, the animal pole forms which one of the following in a adult?

• A. Dorsal side
• B. Ventral side
• C. Head
• D. Tail

Answer 1

The correct option is A Dorsal side

An embryo is divided into two hemispheres as the animal pole (future ectoderm and mesoderm) and the vegetal pole (future endoderm) within the blastula. The animal pole is the portion, where least yolk is concentrated. The animal pole is the dorsal point of the egg and the vegetal pole is at the most ventral point.
Thus, the correct answer is option (A), 'Dorsal side'.