What causes the movement of food inside the alimentary canal?
A
Peristalsis
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B
Pericardium
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C
Rhythmic contraction and relaxation of heart
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D
Pumping
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Solution
The correct option is B Peristalsis The wall of the alimentary canal contains muscle layers. Rhythmic contraction and relaxation of these muscles push the food forward. This is called peristalsis.