Basal electrical rhythm of GIT is  produced by: (A) Meissner plexus, (B) Myentric plexus, (C) Interstitial cells of cajal, (D) Smooth muscle at cardiac end of stomach
Answer is C. Smooth muscle of GIT shows spontaneous fluctuation in membrane potential (between - 65mV and - 45mv) this is called  basal electrical rhythm. It is produced by interstitial cells of cajal.