How is mechanical digestion advantageous?

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It decreases the taste of the food

It slows down the passage of food through the gut and thus allows more time for digestion

Smaller pieces of food can pass quickly through the stomach without the need for storage

Breaking down of large chunks of food into smaller pieces increases surface area for enzymatic action

answer is D.

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Detailed Solution

In mechanical digestion the teeth cut and grind food before it is swallowed, and then smooth muscles of the stomach and small intestine churn the food to further assist the process. As a result, food molecules become dissolved and thoroughly mixed with digestive enzymes. Breaking down of large chunks of food into smaller pieces increases surface area for enzymatic action.

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