Question

Which of the following are derivatives of endoderm?

• A. Muscles and blood
• B. Alimentary canal and respiratory organs
• C. Excretory and reproductive organs
• D. Skin and nerve cord

Answer 1

The correct option is B Alimentary canal and respiratory organs

From the three germ layers, different organs are formed. Blood and muscles are formed by the mesoderm and so are the excretory and the reproductive systems.

Ectoderm is that layer which forms the skin and the entire nervous system including the nerve cord.

Endoderm forms the alimentary canal and the respiratory organs.

So, the correct option is 'Alimentary canal and respiratory organs'.