WORKSHEET 19
1. How is the wall of small intestine adapted for performing the function of absorption of food?
Ans: The inner lining of the small intestine has numerous finger-like projections called villi, which increase the surface area for absorption.
2. Out of a goat and tiger, which one will have a longer small intestine? justify your answer.
Ans: Goat, because herbivores eating grass need a longer small intestine to allow the cellulose to be digested.
3. State the role of pancreas in digestion of food.
Ans: The primary role of the pancreas in digestion is the secretion of pancreatic juice, which contains a group of digestive enzymes that help in the complete digestion of food in the small intestine,
carbohydrates convert into simple sugar by Amylase.
Protein convert into amino acids by trypsin.
Fat globules converts into fatty acids and glycerol by lipase.
4. Name a common nutrient that is absorbed in the small intestine and reabsorbed by the kidney tubules.
Ans: Glucose/Amino Acids
5. What is the role of saliva in the digestion of food?
Ans: Saliva moistens the ingested food with mucus and serve to initiate the process of starch digestion into simple sugar with the help of salivary amylase or ptyalin.
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