The choroid plexus of the fouh ventricle is derived from the: (A) alar plate, (B) basal plate, (C) floor plate, (D) roof plate
Answer is D. Roof plate & its pial covering give rise to the choroid plexus. Alar plate gives rise to sensory neurons Basal plate gives rise to motor neurons Floor plate contains decussating fibers Rhombic lips give rise to the cerebellum.