CBSE Class 10 Answered
Due to variations in food availability with site and season, omnivores must be versatile in their capacity to digest carbohydrates,protein, fat and fibre and to metabolize the nutrients and energy sources absorbed.
Omnivores tend to have a simple stomach, a small intestine of moderate length, and a cecum and/or colon with a structural configuration allowing some digested retention, accomodating modest fibre digestion by microrganisms. They may have longer intestines than animal carnivores, but not as long as herbivores.
(According to "The comparative anatomy of eating", by Milton R. Mills, M.D., in carnivores, the length of small intestine is 3 to 6 times of the body length whereas in omnivores, it is 4 to 6 times the body length. In herbivores, it is 10 to more than 12 times of the body length)