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Biology, 19.09.2021 14:00 queenpaige2015
7. 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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7. The swallowed food moves downwards in the alimentary canal because of
(a) force provided by the...
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