Question

Brain originates from

• A. Mesoderm
• B. Ectoderm
• C. Ecto-mesoderm
• D. Endoderm

Answer 1

The correct option is B Ectoderm

The three germ layers formed due to gastrulation develops into specific organs by the process of organogenesis. The ectoderm eventually, forms the outer layer of the skin and gives rise to the nervous system and sense organs. Tissues that eventually line the digestive tract, and organs that develop as outgrowths of the digestive tract (including the liver, pancreas, and lungs), are all of the endodermal origins. Skeletal tissue, muscle, and the circulatory (example heart, spleen etc.), excretory, and reproductive systems (example gonads) all are derived from mesoderm.

So, the correct answer is option B.