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Practice Class 7 Science Chapter 2 Nutrition in Animals MCQ Questions with Answers based on the latest NCERT syllabus. Learn about bile juice, liver, villi, digestion, small intestine, fat digestion, and Amoeba nutrition with detailed solutions, exam tips, and NCERT-based explanations.
Do You Know
Chapter Information
Subject: Science
Class: 7
Chapter: Nutrition in Animals
Question Type: Multiple Choice Questions (MCQs)
Difficulty Level: Easy to Moderate
Based On: Latest NCERT Syllabus
Introduction
Nutrition in Animals is an important chapter that explains how animals obtain food, digest it, absorb nutrients, and eliminate waste. Students also learn about the human digestive system and the unique feeding process of organisms like Amoeba. Understanding these concepts builds a strong foundation for higher biology and helps answer many examination questions confidently.
What You Will Learn
✔ Human digestive system
✔ Functions of digestive organs
✔ Role of bile juice
✔ Digestion and absorption of food
✔ Structure and function of villi
✔ Nutrition in Amoeba
Why This Topic Is Important?
The digestive system supplies nutrients required for growth, energy, and body repair. Questions related to digestion, digestive organs, enzymes, and Amoeba are commonly asked in CBSE, State Board, Olympiad, and scholarship examinations.
Exam Relevance
These questions are useful for:
✔ CBSE Exams
✔ State Board Exams
✔ School Tests
✔ Unit Tests
✔ Half-Yearly Exams
✔ Annual Exams
✔ Scholarship Examinations
Q1. Which organ secretes bile juice?
A) Liver
B) Pancreas
C) Stomach
D) Large intestine
Answer
Liver
Concept Behind This Question
Bile juice is produced by the liver and helps in the digestion of fats.
Step-by-Step Solution
The liver is the largest gland in the human body. It produces bile juice, which is stored in the gallbladder and released into the small intestine. Bile helps break large fat droplets into smaller droplets, making fat digestion easier.
Therefore, the correct answer is: Liver.
Exam Tip
Remember:
Liver produces bile, while the gallbladder stores it.
Q2. The finger-like outgrowths in the small intestine are called:
A) Nephrons
B) Villi
C) Capillaries
D) Alveoli
Answer
Villi
Concept Behind This Question
Villi increase the surface area of the small intestine for better absorption of digested food.
Step-by-Step Solution
The inner lining of the small intestine contains millions of tiny finger-like projections called villi. These structures absorb nutrients into the bloodstream efficiently.
Nephrons are found in kidneys, capillaries are tiny blood vessels, and alveoli are present in the lungs.
Therefore, the correct answer is: Villi.
Exam Tip
Villi = Absorption of digested food
Q3. The breakdown of complex components of food into simpler substances is called:
A) Respiration
B) Excretion
C) Circulation
D) Digestion
Answer
Digestion
Concept Behind This Question
Digestion converts complex food into simple substances that the body can absorb and use.
Step-by-Step Solution
Food contains complex nutrients such as carbohydrates, proteins, and fats. During digestion, digestive juices and enzymes break these into simpler forms that can be absorbed through the small intestine.
Therefore, the correct answer is: Digestion.
Exam Tip
Do not confuse:
- Digestion → Breakdown of food
- Respiration → Release of energy from food
Q4. Fat is completely digested in the:
A) Mouth
B) Stomach
C) Small intestine
D) Large intestine
Answer
Small Intestine
Concept Behind This Question
Complete digestion of fats takes place in the small intestine with the help of bile juice and digestive enzymes.
Step-by-Step Solution
Bile juice emulsifies fats into tiny droplets, and pancreatic enzymes complete their digestion in the small intestine.
Neither the mouth nor the stomach completes fat digestion, while the large intestine mainly absorbs water.
Therefore, the correct answer is: Small intestine.
Exam Tip
Most digestion and almost all absorption occur in the small intestine.
Q5. Amoeba captures food with the help of:
A) Tentacles
B) Cilia
C) Pseudopodia
D) Food vacuole
Answer
Pseudopodia
Concept Behind This Question
Amoeba uses temporary projections of its body to capture and engulf food.
Step-by-Step Solution
Pseudopodia, also called “false feet,” surround the food particle and enclose it inside a food vacuole where digestion takes place.
The food vacuole digests food but does not capture it.
Therefore, the correct answer is: Pseudopodia.
Exam Tip
Remember:
Pseudopodia = Movement + Food Capture
Important Formulas & Concepts
1. Human Digestive System
Food passes through:
Mouth → Oesophagus → Stomach → Small Intestine → Large Intestine → Rectum → Anus
2. Liver
- Largest gland in the body.
- Produces bile juice.
- Helps in fat digestion.
3. Bile Juice
- Produced by the liver.
- Stored in the gallbladder.
- Breaks large fat droplets into smaller droplets (emulsification).
4. Villi
- Finger-like projections in the small intestine.
- Increase the surface area for absorption of digested food.
5. Digestion
The process of converting complex food into simpler, absorbable substances.
6. Nutrition in Amoeba
Food Capture → Food Vacuole Formation → Digestion → Absorption → Egestion
Amoeba captures food using pseudopodia.
Related Practice Questions
- Which organ stores bile juice?
- Why are villi important in the small intestine?
- Where does protein digestion begin?
- Which organ absorbs most digested nutrients?
- What is the function of a food vacuole in Amoeba?
Mini Quiz Challenge
True or False
- The liver secretes bile juice.
- Villi are found in the stomach.
- Digestion converts complex food into simple substances.
- Complete fat digestion occurs in the small intestine.
- Amoeba captures food using pseudopodia.
Exam Tips
✔ Learn the functions of each digestive organ.
✔ Remember where digestion of carbohydrates, proteins, and fats occurs.
✔ Revise the role of bile juice.
✔ Do not confuse villi with alveoli or nephrons.
✔ Understand each step of nutrition in Amoeba.
Quick Revision Notes
✔ Liver produces bile juice.
✔ Gallbladder stores bile juice.
✔ Villi increase the surface area for absorption.
✔ Digestion converts complex food into simpler substances.
✔ Complete fat digestion occurs in the small intestine.
✔ Amoeba captures food with pseudopodia.
Common Mistakes Students Make
❌ Thinking the gallbladder produces bile juice.
❌ Confusing villi with alveoli or nephrons.
❌ Believing fat digestion is completed in the stomach.
❌ Mixing up digestion and respiration.
❌ Assuming the food vacuole captures food instead of pseudopodia.
Key Takeaways
- The liver produces bile juice for fat digestion.
- Villi help absorb digested nutrients efficiently.
- Digestion changes complex food into simpler substances.
- The small intestine is the main site of digestion and absorption.
- Amoeba captures food with pseudopodia and digests it inside a food vacuole.
FAQs
1. Which organ produces bile juice?
The liver produces bile juice.
2. What is the function of villi?
Villi increase the surface area of the small intestine and absorb digested nutrients.
3. Where is fat completely digested?
Fat is completely digested in the small intestine.
4. What is digestion?
Digestion is the process of breaking complex food into simple substances that can be absorbed by the body.
5. How does Amoeba capture food?
Amoeba captures food with the help of pseudopodia (false feet).
Conclusion
This Class 7 Science MCQ Practice Set covers the essential concepts of Nutrition in Animals, including the digestive system, bile juice, villi, fat digestion, and nutrition in Amoeba. Regular practice of these NCERT-based questions improves conceptual clarity, strengthens problem-solving skills, and helps students perform better in school and competitive examinations.
NCERT Reference
Book: NCERT Science Class 7
Chapter: Chapter 2 – Nutrition in Animals
Based On: Latest NCERT Curriculum (CBSE)
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