Human Organ System Class 7 MCQs 1. Where does the absorption of digested food occur? Stomach Small intestine Mouth Oesophagus 2. What is the role of the large intestine in the digestive process? It helps to breakdown fats into smaller pieces It starts the chemical digestion of proteins It absorbs water and mineral salts It starts the chemical digestion of carbohydrates 3. What is the role of the teeth in the digestive process? It starts the chemical digestion of carbohydrates It helps to breakdown fats into smaller pieces It starts the chemical digestion of proteins It helps to break down food into smaller pieces 4. What is the role of the liver in the digestive process? It secretes pancreatic juice It helps to break down food into smaller pieces It secretes bile It absorbs water and mineral salts 5. What is diarrhea? Fast downwards rhythmic action of digestive tract Fast upwards rhythmic action of digestive tract Slow upwards rhythmic action of digestive tract Slow downwards rhythmic action of digestive tract 6. What is the primary cause of diarrhea? Lack of physical activity Abnormal secretion of juices Presence of micro-organisms in contaminated food and water Excess water intake 7. What is the result of dehydration caused by diarrhea? Happiness Strength Anger Weakness 8. What is constipation? Slow upwards rhythmic action of digestive tract Fast upwards rhythmic action of digestive tract Fast downwards rhythmic action of digestive tract Slow downwards rhythmic action of digestive tract 9. What is the main characteristic of faces in constipation? Liquid Soft and easy to pass None of the them Hard and difficult to pass 10. What is respiration? The process of obtaining oxygen from the digestive system A biochemical process in which simple carbohydrates are broken down to release energy The transport of oxygen and food to cells by the circulatory system All Loading … Pages: 1 2 3 4 5
