This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Eye, Nose and Ear, Subject name: Anatomy
The surface ectoderm gives rise to which of the following structures? 
Select and explain. 
A. Dilator pupillae muscle, B. Retina, C. Lens, D. Sclera
C: Lens
Answer: C: Lens 
Explanation: The surface ectoderm gives rise to the cornea ( first layer ) & the eye lens. Dilator pupillae muscle &retina is derived from neuroectoderm. Sclera is derived from neural crest cells.