Which of the following is NOT true of mechanical digestion? Muscular contraction in the stomach mix food The teeth and tongue break food into smaller pieces It starts in the mouth Enzymes break down food

It starts in the mouth Enzymes break down food

Explanation:

Mechanical digestion is a type of digestion which is done by breaking of food materials into small pieces through physical means such as cutting and crushing by teeth and muscular contraction of stomach while the break down of food molecules by the action of enzyme such as saliva etc is chemical digestion. Chemical digestion helps in speeding up the process of digestion.

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