Question

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Answer 1

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❀ Ingestion of food is difficult without teeth.

➪ Ingestion is difficult without teeth. One of the main purposes of teeth is to break down food into smaller pieces.

That is what we call mechanical digestion.

Chemical enzymes break down food into even smaller pieces so the body can readily absorb the food.

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❀ If we chew rice or bread for a few minutes it starts tasting sweet.

➪ If we chew bread or rice for a few minutes, they start tasting sweet.

It is because the enzymes in your saliva are previously breaking down the starch content to glucose.

When it comes to rice and bread, they are made of pure glucose molecules.

The starchy foods bring more energy to your body.

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❀ Bacteria are present in the caecum of ruminants.

➪ It is true that bacteria are present in caecum of ruminants.

Many bacteria are present in the caecum of cow, which help in the digestion of a nutrient called cellulose which is contained by plants.

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Answer 2

A. Because unchewed food does not get digested. Therefore we should chew food properly with our teeth.

Hope it helps