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
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The swallowed food moves downwards in the alimentary canal because of. A. Force provided by the muscular tongue. B ... The contraction of muscles in the wall of food pipe.
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Answer:
Correct option is D
Explanation:
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