Understanding the key concepts of Class 7 Science Chapter 9 – Life Processes in Animals is crucial for exam success. To make your revision easier, we have created chapterwise mcq questions with Answers for class 7 Science based on the latest syllabus and exam pattern. It is a part of MCQ Questions for CBSE Class 7 Science Series.
These multiple-choice questions will help you assess your knowledge, improve accuracy, and boost confidence for your exams. Whether you are preparing for school tests, online tests or competitive exams, these Life Processes in Animals MCQs will strengthen your conceptual clarity.
| Chapter | Life Processes in Animals |
| Book | Curiosity |
| Type of Questions | MCQ Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 7 |
| Subject | Science |
| Useful for | Class 7 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 7 Science Chapterwise MCQ Questions |
MCQ Questions on Life Processes in Animals Class 7 Science – Curiosity
MCQs
Q1. What is the process of breaking down complex food into simpler forms called?
(a) Ingestion
(b) Digestion
(c) Egestion
(d) Absorption
Show Answer
Answer: (b)
Explanation: Digestion is the process of breaking down complex food into simpler forms for absorption.
Q2. Which part of the human digestive system is primarily responsible for nutrient absorption?
(a) Stomach
(b) Mouth
(c) Small intestine
(d) Large intestine
Show Answer
Answer: (c)
Explanation: The small intestine, with its finger-like projections, absorbs most of the digested nutrients.
Q3. What is the function of bile secreted by the liver?
(a) Break down proteins
(b) Absorb nutrients
(c) Neutralise stomach acid and break down fats
(d) Kill bacteria
Show Answer
Answer: (c)
Explanation: Bile is basic and neutralises stomach acids and emulsifies fats for digestion.
Q4. What is rumination in animals?
(a) Absorption of nutrients
(b) Swallowing food whole
(c) Chewing of cud
(d) Grinding food in stomach
Show Answer
Answer: (c)
Explanation: Rumination is the process where ruminant animals chew the cud to further break it down.
Q5. Which part of the alimentary canal stores waste before egestion?
(a) Small intestine
(b) Liver
(c) Rectum
(d) Stomach
Show Answer
Answer: (c)
Explanation: The rectum stores semi-solid waste before it is expelled through the anus.
Q6. In birds, food is ground using:
(a) Teeth
(b) Stomach
(c) Gizzard
(d) Liver
Show Answer
Answer: (c)
Explanation: Birds have a muscular gizzard that grinds food using swallowed grit.
Q7. Which gas is released during respiration in humans?
(a) Oxygen
(b) Nitrogen
(c) Hydrogen
(d) Carbon dioxide
Show Answer
Answer: (d)
Explanation: Carbon dioxide is the waste gas released during respiration.
Q8. What is the dome-shaped muscle that helps in breathing called?
(a) Ribcage
(b) Alveoli
(c) Diaphragm
(d) Trachea
Show Answer
Answer: (c)
Explanation: The diaphragm contracts and relaxes to aid in inhalation and exhalation.
Q9. Which structure in lungs is responsible for exchange of gases?
(a) Bronchi
(b) Alveoli
(c) Trachea
(d) Diaphragm
Show Answer
Answer: (b)
Explanation: Alveoli are tiny sacs in the lungs where oxygen and carbon dioxide are exchanged.
Q10. Which gas turns lime water milky when exhaled air is blown into it?
(a) Oxygen
(b) Nitrogen
(c) Hydrogen
(d) Carbon dioxide
Show Answer
Answer: (d)
Explanation: Carbon dioxide reacts with lime water to form calcium carbonate, turning it milky.
Q11. What is the function of mucus in the stomach?
(a) Digest proteins
(b) Neutralise acid
(c) Protect stomach lining
(d) Absorb nutrients
Show Answer
Answer: (c)
Explanation: Mucus protects the inner lining of the stomach from acid damage.
Q12. Which organ secretes pancreatic juice?
(a) Liver
(b) Gall bladder
(c) Pancreas
(d) Small intestine
Show Answer
Answer: (c)
Explanation: The pancreas secretes pancreatic juice which helps in digesting carbohydrates, proteins, and fats.
Q13. Which animals use skin for gas exchange in water?
(a) Fishes
(b) Earthworms
(c) Birds
(d) Reptiles
Show Answer
Answer: (b)
Explanation: Earthworms breathe through their moist skin to exchange gases.
Q14. What is the role of villi in the small intestine?
(a) Produce bile
(b) Trap dust
(c) Increase surface area for absorption
(d) Kill bacteria
Show Answer
Answer: (c)
Explanation: Villi increase the surface area of the small intestine to absorb nutrients more efficiently.
Q15. What happens during inhalation?
(a) Ribs move in, diaphragm rises
(b) Ribs move out, diaphragm moves down
(c) Air moves out
(d) Diaphragm contracts and pushes air out
Show Answer
Answer: (b)
Explanation: During inhalation, ribs move out and diaphragm contracts downward to allow air in.
Q16. What is the correct word equation for respiration?
(a) Carbon dioxide + Water → Oxygen
(b) Glucose + Oxygen → Carbon dioxide + Water + Energy
(c) Protein + Oxygen → Energy
(d) Sugar + Nitrogen → Energy
Show Answer
Answer: (b)
Explanation: The correct word equation for respiration is Glucose + Oxygen → CO₂ + H₂O + Energy.
Q17. What is egestion?
(a) Breakdown of food
(b) Absorption of nutrients
(c) Removal of undigested food
(d) Conversion of sugar into energy
Show Answer
Answer: (c)
Explanation: Egestion is the process of removing undigested and unabsorbed food from the body.
Q18. Which animals use gills for breathing?
(a) Frogs
(b) Birds
(c) Humans
(d) Fish
Show Answer
Answer: (d)
Explanation: Fish have gills that extract oxygen from water and expel carbon dioxide.
Q19. Which part carries air to the lungs?
(a) Liver
(b) Diaphragm
(c) Windpipe
(d) Villi
Show Answer
Answer: (c)
Explanation: The windpipe or trachea carries air from the nose to the lungs.
Q20. Which part of the human body produces a sweet taste when chewing rice?
(a) Oesophagus
(b) Stomach
(c) Saliva
(d) Pancreas
Show Answer
Answer: (c)
Explanation: Saliva contains enzymes that break down starch into sugar, causing a sweet taste when chewing rice.
We hope the given mcq questions with Answers for Life Processes in Animals Class 7 helps you in your learning.
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Topics from which mcq questions may be asked
- Animal nutrition
- Digestive system
- Health and hygiene
Healthy animals reflect a well-functioning ecosystem.
Frequently Asked Questions (FAQs) on Life Processes in Animals MCQ Questions
Q1: Why should I practice Class 7 Science Chapter 8 MCQs?
A1: Practicing MCQs helps in quick revision, improves problem-solving speed, and enhances conceptual understanding of important topics in Class 7 Science.
Q2: Are these Class 7 Science MCQs based on the latest syllabus?
A2: Yes, all the MCQs are designed as per the latest CBSE syllabus and exam pattern to help students prepare effectively.
Q3: Where can I find more MCQs for Class 7 Science?
A3: You can find more chapter-wise MCQs on our website. These are designed to cover important concepts and prepare you for exams.
Q4: Are the answers provided for all MCQs?
A4: Yes, each MCQ is accompanied by the correct answer and explanations to help students understand and learn better.
Q5: How can I improve my performance in Class 7 Science MCQs?
A5: To improve your performance, practice regularly, revise key concepts, and take mock tests to assess your knowledge.
Q6: Do these MCQs help in school exams?
A6: Yes, these MCQs are aligned with school exam patterns and help in scoring well by strengthening conceptual clarity.
Q7: Can I download these MCQs for offline practice?
A7: Yes, you can download or print these MCQs for convenient offline practice.
