This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Embryology, Subject name: Anatomy
Ameloblast develop from - 
Select and explain. 
A. Mesoderm, B. Endoderm, C. Neural crest, D. Ectoderm
D: Ectoderm
Answer: D: Ectoderm 
Explanation: Ans. is 'd' i.e., Ectoderm * Various parts of teeth are derived asA) Dental papillae (mesoderm of neural crest origin) give rise to :i) Odontoblasts which form dentine.ii) Dental pulp.B) Enamel organ (ecdoderm) give rise to ameloblasts which form enamel and dental cuticle.C) Mesenchyme around tooth give rise to cementum and periodontal ligaments.