ICSE Class 6 Biology - Digestive System - Test 5 (Comprehensive)
1. The digestive system works as a:
A. Coordinated system of organs
B. Single organ only
C. Bone structure system
2. Digestion takes place in:
A. Only stomach
B. Multiple organs in stages
C. Only mouth
3. The chemical breakdown of food is helped by:
A. Blood cells
B. Oxygen
C. Enzymes
4. A balanced diet is important because it provides:
A. Energy and nutrients
B. Only water
C. Only oxygen
5. The small intestine is responsible for:
A. Waste storage
B. Digestion and absorption
C. Oxygen transport
6. Saliva contains:
A. Oxygen
B. Blood
C. Enzymes
7. The first step of digestion is:
A. Chewing food
B. Absorption of nutrients
C. Waste removal
8. Peristalsis helps in:
A. Food storage
B. Movement of food
C. Oxygen release
9. Stomach acid helps in:
A. Bone growth
B. Blood formation
C. Digestion and germ killing
10. Roughage in food is important for:
A. Smooth bowel movement
B. Oxygen transport
C. Bone strengthening
11. Absorption means:
A. Food chewing
B. Nutrients entering blood
C. Waste formation
12. Villi are important because they:
A. Produce saliva
B. Store food
C. Increase absorption area
13. The liver helps digestion by producing:
A. Bile
B. Oxygen
C. Blood pressure
14. Pancreas secretes:
A. Saliva
B. Digestive juice
C. Sweat
15. Large intestine mainly helps in:
A. Protein digestion
B. Oxygen absorption
C. Water absorption
16. Egestion is the process of:
A. Removing undigested food
B. Absorbing nutrients
C. Producing enzymes
17. Enzymes in digestion act as:
A. Food particles
B. Catalysts
C. Waste materials
18. The main aim of digestion is to:
A. Store food
B. Produce oxygen
C. Release energy
19. Digestion involves:
A. Different organs working together
B. Only stomach working
C. Only mouth working
20. A healthy digestive system ensures:
A. No food intake
B. Proper nutrition
C. No digestion