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Vermiform appendix of man has become a vestigial organ.
Ans. 1. The normal function of caecum and appendix in
mammals is the digestion of cellulose.
2. Human ancestors used to eat uncooked food with
considerable amount of cellulose in it.
3. With the passage of time, man has change his diet. Now
he eats cooked food.
4. So, vermiform appendix of man has become a vestigial
organ.