Question

the ectoderm gives rise to which of the following organ systems?
a) skeletal system
b) nervous system
c) digestive system
d) circulatory system

Explanation:

During embryonic development, the ectoderm is one of the three primary germ layers. The nervous system (including the brain and spinal cord) and the epidermis (outer layer of skin) develop from the ectoderm. The skeletal system mainly comes from the mesoderm. The digestive system (lining of the digestive tract) has contributions from the endoderm. The circulatory system (blood vessels, heart) also develops from the mesoderm.

Answer:

B. Nervous system