Digestive system in vertebrates is formed by which germ layer?
Correct answer: B. Endoderm
- A. Ectoderm
- B. Endoderm
- C. Mesoderm
- D. None of these
Explanation
The digestive system in vertebrates is primarily formed by the endoderm, which is one of the three primary germ layers in the early embryonic development of animals. The endoderm gives rise to the innermost layer of cells in the embryo, which eventually develops into various organs and structures of the digestive system, including the lining of the gastrointestinal tract, liver, pancreas, and respiratory system.
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About Digestion
The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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