This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Optic vesicle is derived from ? \nSelect and explain. \nA. Neuroectoderm, B. Surface ectoderm, C. Endoderm, D. Mesoderum', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is'a'i.e., Neuroectoderm(Ref Indo Khurana ernbryology p. 268)Formation of optic cupAn outgrowth from prosencephalon forms optic vesicle (neuroectodermal structure).Proximal pa of optic vesicle becomes constricted and elongated to form optic stalk.", 'role': 'assistant'}]