Question Paper
Class / Subject: Class 9 (ICSE) · Biology
Chapter: Chapter 11 — Chapter 11: The Digestive System
Time Allowed: 32 minutes
Max Marks: 16
1. What is mechanical digestion? [1]
(A) Physical breakdown of food
(B) Chemical breakdown by enzymes
(C) No breakdown at all
(D) Only absorption
2. What is chemical digestion? [1]
(A) Breakdown using enzymes
(B) Physical breakdown only
(C) No breakdown at all
(D) Only absorption
3. What does amylase break down? [1]
(A) Starch
(B) Proteins
(C) Fats
(D) Nothing
4. What does protease break down? [1]
(A) Proteins
(B) Starch
(C) Fats
(D) Nothing
5. Where does most nutrient absorption occur? [1]
(A) The small intestine
(B) The mouth
(C) The stomach
(D) The large intestine
6. What are villi? [1]
(A) Finger-like projections increasing surface area
(B) A type of enzyme
(C) A type of food
(D) Nothing specific
7. What do villi increase? [1]
(A) Surface area for absorption
(B) Only the size of the intestine
(C) Nothing useful
(D) Only mucus production
8. Why study the digestive system? [1]
(A) To understand nutrient extraction for the body
(B) No reason
(C) It's not useful
(D) Only for tests
9. What is mechanical digestion? [1]
(A) Physical breakdown of food
(B) Chemical breakdown by enzymes
(C) No breakdown at all
(D) Only absorption
10. What is chemical digestion? [1]
(A) Breakdown using enzymes
(B) Physical breakdown only
(C) No breakdown at all
(D) Only absorption
11. What does amylase break down? [1]
(A) Starch
(B) Proteins
(C) Fats
(D) Nothing
12. What does protease break down? [1]
(A) Proteins
(B) Starch
(C) Fats
(D) Nothing
13. Where does most nutrient absorption occur? [1]
(A) The small intestine
(B) The mouth
(C) The stomach
(D) The large intestine
14. What are villi? [1]
(A) Finger-like projections increasing surface area
(B) A type of enzyme
(C) A type of food
(D) Nothing specific
15. What do villi increase? [1]
(A) Surface area for absorption
(B) Only the size of the intestine
(C) Nothing useful
(D) Only mucus production
16. Why study the digestive system? [1]
(A) To understand nutrient extraction for the body
(B) No reason
(C) It's not useful
(D) Only for tests