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Practice Class 7 Science Chapter 2 Nutrition in Animals MCQ Questions with Answers and Useful Details based on the NCERT syllabus. Learn about the stomach, small intestine, large intestine, liver, pancreas, bile, digestive juices, and absorption of nutrients.
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Chapter Information
Subject: Science
Class: 7
Chapter: Nutrition in Animals
Question Type: Multiple Choice Questions (MCQs)
Practice Set: 12
Difficulty Level: Difficult
Based On: NCERT Syllabus
Introduction
The human digestive system consists of several organs and digestive glands that work together to process food. The stomach, liver, pancreas, small intestine, and large intestine each have important roles in digestion and nutrition.
The liver produces bile, while the pancreas produces pancreatic juice. These digestive secretions act in the small intestine and help in the digestion of food.
This Practice Set 12 focuses on the functions of important digestive organs and glands, especially the liver, pancreas, bile, small intestine, and large intestine.
What You Will Learn
✔ Function of the liver in digestion
✔ Role of bile
✔ Function of the pancreas
✔ Role of pancreatic juice
✔ Functions of the small intestine
✔ Functions of the large intestine
✔ Absorption of water
✔ Difference between digestive organs and digestive glands
Why This Topic Is Important
Different organs of the digestive system perform specialised functions. Understanding their roles helps students understand how digestion is completed and how nutrients and water are processed before waste is removed.
These concepts are frequently useful in school examinations and diagram-based questions.
Exam Relevance
These questions are useful for:
✔ CBSE School Exams
✔ State Board Exams
✔ Unit Tests
✔ Half-Yearly Exams
✔ Annual Exams
✔ NCERT-Based Practice
✔ Science Revision
Q1. Which organ produces bile?
A) Pancreas
B) Liver
C) Stomach
D) Small intestine
Answer:
B) Liver
Useful Detail
The liver is a large digestive gland that produces bile.
Bile is stored in the gall bladder and released into the small intestine. It helps in the digestion of fats by breaking large fat globules into smaller droplets, a process called emulsification.
Therefore, the liver plays an important role in the digestion of fats.
Correct Answer: B) Liver
Q2. What is the main role of bile in digestion?
A) It digests proteins directly.
B) It helps break large fat globules into smaller droplets.
C) It digests starch in the mouth.
D) It absorbs water from food.
Answer:
B) It helps break large fat globules into smaller droplets.
Useful Detail
Bile does not itself act like a digestive enzyme. Instead, it helps in the digestion of fats by emulsifying fats.
This process breaks large fat globules into smaller droplets, increasing the surface area on which digestive enzymes can act.
Bile also helps provide a suitable alkaline medium for the action of certain digestive enzymes in the small intestine.
Correct Answer: B) It helps break large fat globules into smaller droplets.
Q3. Which organ produces pancreatic juice?
A) Liver
B) Stomach
C) Pancreas
D) Large intestine
Answer:
C) Pancreas
Useful Detail
The pancreas is a digestive gland located near the stomach.
It produces pancreatic juice, which contains digestive enzymes that help break down carbohydrates, proteins, and fats.
Pancreatic juice is released into the small intestine, where it contributes significantly to the digestion of food.
Correct Answer: C) Pancreas
Q4. Which function is mainly associated with the large intestine?
A) Absorption of most digested nutrients
B) Absorption of water and formation of faeces
C) Production of saliva
D) Digestion of food using teeth
Answer:
B) Absorption of water and formation of faeces
Useful Detail
After most nutrients have been absorbed in the small intestine, the remaining material passes into the large intestine.
The large intestine absorbs much of the remaining water and some salts. The remaining waste material becomes more solid and eventually forms faeces.
The faeces are temporarily stored in the rectum before being expelled.
Correct Answer: B) Absorption of water and formation of faeces
Q5. Why is the small intestine considered an important part of the digestive system?
A) It only stores undigested food.
B) It is the main site where digestion is completed and nutrients are absorbed.
C) It produces teeth.
D) It only removes faeces.
Answer:
B) It is the main site where digestion is completed and nutrients are absorbed.
Useful Detail
The small intestine is a long, coiled tube where digestion is completed with the help of digestive juices from the intestinal wall, pancreas, and bile from the liver.
Its inner surface contains numerous villi, which increase the area available for absorption.
The digested nutrients are absorbed through the walls of the small intestine and carried by the blood to different parts of the body.
Correct Answer: B) It is the main site where digestion is completed and nutrients are absorbed.
Important Formulas & Concepts
Science Chapter 2 does not contain mathematical formulas. Important concepts are given below.
1. Liver
The liver produces bile, which helps in the digestion of fats.
2. Bile
Bile helps emulsify fats and supports digestion in the small intestine.
3. Pancreas
The pancreas produces pancreatic juice containing digestive enzymes.
4. Pancreatic Juice
Pancreatic juice helps digest carbohydrates, proteins, and fats.
5. Small Intestine
The small intestine is the major site of completion of digestion and absorption of nutrients.
6. Villi
Villi increase the surface area of the small intestine for efficient absorption.
7. Large Intestine
The large intestine absorbs much of the remaining water and helps form faeces.
8. Rectum
The rectum temporarily stores faeces before egestion.
Related Practice Questions
Q1. Which organ produces bile?
Q2. What is the role of bile in fat digestion?
Q3. What does pancreatic juice contain?
Q4. Why is the small intestine long and coiled?
Q5. What happens to the remaining material in the large intestine?
Mini Quiz Challenge
Try answering these questions within 60 seconds.
Q1. Bile is produced by the:
A) Pancreas
B) Liver
C) Stomach
D) Small intestine
Q2. Bile mainly helps in the digestion of:
A) Fats
B) Vitamins
C) Minerals
D) Water
Q3. Pancreatic juice is released into the:
A) Mouth
B) Stomach
C) Small intestine
D) Large intestine
Q4. Most digested nutrients are absorbed in the:
A) Small intestine
B) Oesophagus
C) Stomach
D) Rectum
Q5. The large intestine mainly absorbs:
A) Proteins
B) Water
C) Starch
D) Fats
Exam Tips
✔ Remember that the liver produces bile.
✔ Bile helps in the digestion of fats by emulsification.
✔ Do not confuse the liver with the gall bladder—the liver produces bile, while the gall bladder stores it.
✔ The pancreas produces pancreatic juice.
✔ Pancreatic juice acts in the small intestine.
✔ The small intestine is the major site of digestion completion and nutrient absorption.
✔ The large intestine absorbs much of the remaining water.
✔ Villi increase the surface area for absorption.
Quick Revision Notes
✔ Liver: Produces bile.
✔ Gall bladder: Stores bile.
✔ Bile: Helps in fat digestion.
✔ Pancreas: Produces pancreatic juice.
✔ Pancreatic juice: Helps digest carbohydrates, proteins, and fats.
✔ Small intestine: Digestion is completed and nutrients are absorbed.
✔ Villi: Increase absorption surface area.
✔ Large intestine: Absorbs much of the remaining water.
✔ Rectum: Temporarily stores faeces.
Common Mistakes Students Make
❌ Thinking that the gall bladder produces bile.
❌ Thinking that bile is a digestive enzyme.
❌ Confusing the liver with the pancreas.
❌ Thinking that most nutrient absorption occurs in the large intestine.
❌ Forgetting the role of villi.
❌ Thinking that the large intestine mainly digests food.
Key Takeaways
✔ The liver produces bile.
✔ The gall bladder stores bile.
✔ Bile helps in the digestion of fats.
✔ The pancreas produces pancreatic juice.
✔ Pancreatic juice contains digestive enzymes.
✔ The small intestine completes much of digestion and absorbs nutrients.
✔ Villi increase the surface area for absorption.
✔ The large intestine absorbs much of the remaining water.
FAQs
Q. Which organ produces bile?
Answer:
The liver produces bile.
Q. Where is bile stored?
Answer:
Bile is stored in the gall bladder.
Q. What is the function of bile?
Answer:
Bile helps in the digestion of fats by breaking large fat globules into smaller droplets through emulsification.
Q. What does the pancreas produce?
Answer:
The pancreas produces pancreatic juice containing digestive enzymes that help digest carbohydrates, proteins, and fats.
Q. What is the main function of the large intestine?
Answer:
The large intestine absorbs much of the remaining water and helps in the formation of faeces.
Conclusion
These Class 7 Science Chapter 2 Nutrition in Animals MCQ Questions with Answers and Useful Details – cover important concepts related to the liver, bile, pancreas, pancreatic juice, small intestine, villi, and large intestine.
Understanding the specialised functions of these organs helps students understand how digestion is completed, nutrients are absorbed, and undigested material is processed before egestion.
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