<prompt> Faecal mass is mainly derived from: March 2005Undigested foodDigested foodIntestinal secretionsintestinal flora  <response>: Ans. A: Undigested foodFaeces normally are about 34th water and 14th solid waste.Solid water is composed of:About 30 dead bacteria30 undigested roughage from the food and dried constituents of digestive juices.10-20 fat10-20 inorganic matter2-3 protein 