Q4Multiple choice
The swallowed food moves downwards in the alimentary canal because of
- (a)force provided by the muscular tongue.
- (b)the flow of water taken with the food.
- (c)gravitational pull.
- (d)the contraction of muscles in the wall of food pipe. NUTRITION IN ANIMALS 7
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(d) the contraction of muscles in the wall of food pipe. NUTRITION IN ANIMALS 7