(i) Why are canines absent or reduced in herbivorous mammals?
(ii) Which food stuff yields the maximum amount of energy on complete combustion and how much?
(iii) Cellulose is not digested in humans whereas cows can digest it. Give reason.
(iv) Fill in the Blank; Dietary fibres are composed of -
(v) Why are vitamins important for animals even when they do not produce energy?