At Bodhiclasses, we believe in empowering students through well-curated practice materials that promote both clarity and confidence. Here is a sample question paper designed on Class 7 Science Chapter 9 – Life Processes in Animals, with a mix of MCQs, short answers, and higher-order thinking questions. Practice thoroughly, and then check your responses with the solution sheet at the end.
Sample Question Paper: Life Processes
Subject: Science
Class: 7
Chapter: 9 – Life Processes in Animals
Time: 1 Hour Marks: 40
Chapter 9 – Life Processes in Animals
Section A: Multiple Choice Questions (1 mark each)
- What is the role of bile in digestion?
(a) Digests proteins (b) Breaks down starch (c) Neutralises acid (d) Absorbs water - Where does most of the digestion and absorption take place in the human body?
(a) Stomach (b) Large intestine (c) Small intestine (d) Liver - Which of the following animals uses both lungs and skin for respiration?
(a) Earthworm (b) Fish (c) Frog (d) Bird - The process of pushing food through the food pipe is called:
(a) Digestion (b) Egestion (c) Peristalsis (d) Swallowing - The lungs are protected by:
(a) Skull (b) Ribcage (c) Skin (d) Diaphragm - Which organ stores undigested food before it is expelled from the body?
(a) Stomach (b) Rectum (c) Small intestine (d) Liver - Birds grind food using their:
(a) Teeth (b) Tongue (c) Gizzard (d) Beak - Villi are found in:
(a) Liver (b) Large intestine (c) Small intestine (d) Stomach - The enzyme in saliva helps digest:
(a) Fat (b) Protein (c) Starch (d) Fibre - What gas do we exhale in larger amounts?
(a) Nitrogen (b) Carbon dioxide (c) Oxygen (d) Hydrogen
Section B: One Mark Questions (Answer in 1 sentence)
- What protects the inner lining of the stomach from acid?
- What is the role of the diaphragm in breathing?
- Define rumination.
- Which part of the respiratory system carries air from the nose to the lungs?
- What is the function of alveoli?
- Why do ruminants chew cud?
- What is egestion?
- What is the percentage of oxygen in inhaled air?
- Name the digestive juice secreted by the pancreas.
- Name one animal that breathes through skin.
Section C: Two Mark Questions (Answer briefly)
- How is the structure of villi suited for absorption?
- Explain the difference between breathing and respiration.
- Why is chewing food properly important for digestion?
- What is the function of mucus in the stomach?
- What role does the small intestine play in digestion and absorption?
- Why do we sneeze when exposed to dust?
- What happens to the food in the large intestine?
- Describe the structure and function of alveoli.
- State two reasons why respiration is important for survival.
- Describe the mechanism of inhalation.
Section D: Higher Order Thinking Skills (HOTS) – 3 Marks each
- A person chews food quickly and swallows large pieces. How might this affect digestion and nutrient absorption?
- Why is the small intestine longer than the large intestine, even though it’s called ‘small’?
- How can breathing exercises like pranayama improve the functioning of the respiratory system?
- If the stomach lining stopped producing mucus, what health problems could arise?
- How is the human digestive system different from that of a bird or ruminant?
🗂️ Answer Sheet / Solutions: Life Processes
Section A: MCQs
- (c) 2. (c) 3. (c) 4. (c) 5. (b)
- (b) 7. (c) 8. (c) 9. (c) 10. (b)
Section B: One Mark Questions
11. Mucus protects the stomach lining from acid.
12. It helps in inhalation and exhalation.
13. The process of bringing back partially digested food for chewing.
14. Windpipe (trachea).
15. Exchange of oxygen and carbon dioxide.
16. To aid better digestion of fibrous food.
17. Removal of undigested waste.
18. Around 21%
19. Pancreatic juice
20. Earthworm
Section C: Two Mark Questions
21. Villi have thin walls and a large surface area for efficient absorption.
22. Breathing is physical air movement; respiration is cellular energy release.
23. It increases surface area and allows saliva to act on food.
24. It protects the stomach lining from being damaged by acid.
25. Completes digestion and absorbs nutrients into the bloodstream.
26. Sneezing expels irritants like dust from the nasal passage.
27. Water and salts are absorbed; waste is stored as stool.
28. Alveoli are tiny sacs with thin walls for gas exchange with blood.
29. It provides energy and removes carbon dioxide.
30. Diaphragm moves down and ribs expand, increasing chest volume to draw air in.
Section D: HOTS
31. Large food pieces reduce surface area for enzymes, leading to poor digestion.
32. The small intestine is longer to provide more time and surface area for absorption.
33. Improves lung capacity, oxygen intake, and relaxation.
34. The acid would damage the stomach lining, leading to ulcers.
35. Humans chew food fully before swallowing; birds use a gizzard, and ruminants re-chew food.
Chapter 9 – Life Processes in Animals
