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  • (a) Why is nutrition necessary for the human body ? (b) What causes movement of food inside the alimentary canal ? (c) Why is small intestine in herbivores longer than in carnivores ? (d) What will happen if mucus is not s

(a) Why is nutrition necessary for the human body ?

(b) What causes movement of food inside the alimentary canal ?

(c) Why is small intestine in herbivores longer than in carnivores ?

(d) What will happen if mucus is not secreted by the gastric glands ?

 

 

 

 
 
 
 
 

Answers (1)

a) Nutrients are the substances which are essential for the human body and found in food which drive biological activity. They are categorized as proteins, fats, carbohydrates (sugars, dietary fibre), vitamins, and minerals, and perform the following vital functions and provide immunity to the body.

b) Peristalsis causes movement of food inside the alimentary canal.

c) The small intestine is longer in herbivore than in carnivore because herbivores eat only grass which is full of cellulose and the digestion of cellulose takes a long time to absorb.

d) If the mucus is not released, it will lead to a breakthrough of the inner lining of the stomach causing acidity and ulcers.

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