Question

I. Brain
II. Epidermis
III. Limb bones

Out of the given tissues, the ectoderm layer gives rise to

• A. I only
• B. II only
• C. I and II
• D. I and III
• E. II and III

Answer 1

The correct option is C I and II

Ectoderm layer of embryo gives rise to the epidermis of the skin and whole nervous system (brain and other structures). The brain is derived from neural crest cells while cells of ectoderm present on ventral side of embryo give rise to epidermis. Leg bones and other structures of the skeleton are derived from mesoderm. So, the correct answer is option C.