This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy, Development and clinical examination, Subject name: Ophthalmology
[{'content': 'The following ocular structure is not derived from surface ectoderm \nSelect and explain. \nA. Crystalline lens, B. Sclera, C. Corneal epithelium, D. Epithelium of lacrimal glands', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The ocular structure derived from surface ectoderm are The crystalline lens The epithelium of the cornea The epithelium of the conjunctiva Lacrimal gland The epithelium of the eyelids & its derivatives, .viz cilia, tarsal gland & conjunctival glands The epithelium lining the lacrimal apparatus The sclera is derived from the associated paraxial mesenchyme. Reference:', 'role': 'assistant'}]