Question

In a frog, gastrulation process involves

• A. Epiboly
• B. Emboly
• C. Invagination
• D. All of the above

Answer 1

Answer: (D)

All of the above

Gastrulation is a phase early in the embryonic development of most animals, during which the single-layered blastula is reorganized into a trilaminar structure known as the gastrula. These three germ layers are known as the ectoderm, mesoderm, and endoderm. In frog, these layers are formed by the processes of epiboly, emboly and invagination.

Therefore, the correct answer is option D.