Question

What causes movement of food inside the alimentary canal?​

Answer 1

Answer:

The wall of alimentary canal contains muscle layers which cause rhythmic contraction, expansion and relaxation due to which food pushes forward and is called as peristalsis movement occurs all along in gut.

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Answer 2

Answer:

$Peristalsis$

Explanation:

Peristalsis mainly causes movement of food inside the alimentary canal. The wall of alimentary canal contains muscle layers. Peristalsis is an involuntary movements of muscles in digestive tract that occur in the form of wavelike contractions and allow food to move in alimentary canal.