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 foodpipe
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Answer:
The contraction of muscles in the wall of food pipe.
When food goes into the food pipe, the muscles in its walls start alternate contraction and relaxation producing a wave-like movement that called 'peristalsis'. These movements are necessary for forwarding the food downwards in the alimentary canal.
The correct answer is option (d)
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Answer:
The contraction of muscles in the wall of food pipe.
Explanation:
When food goes into the food pipe, the muscles in its walls start alternate contraction and relaxation producing a wave-like movement that called 'peristalsis'. These movements are necessary for forwarding the food downwards in the alimentary canal.
The correct answer is option (d).
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