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: Unknown
Lens develops from: 
Select and explain. 
A. Surface ectoderm, B. Neuroectoderm, C. Mesoderm, D. Endoderm
A: Surface ectoderm
Answer: A: Surface ectoderm 
Explanation: Ans: a) (surface ectoderm) Ref: parson 20th ed p- 4Structures arising from various primodial layers:Neural ectoderm:Mesoderm:smooth muscle of the irisiris epitheliumciliary epitheliumretinaretinal pigment epitheliumfibres of the optic nervepart of vitreousextraocular musclescorneal stromasclerairischoroidspart of vitreousSurface ectoderm:conjunctival epitheliumcomeal epitheliumlacrimal glandstarsal glandslens