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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 different stages of nutrition, digestion, absorption, assimilation, egestion, digestive organs, and nutrition in Amoeba.
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Chapter Information
Subject: Science
Class: 7
Chapter: Nutrition in Animals
Question Type: Multiple Choice Questions (MCQs)
Practice Set: 9
Difficulty Level: Moderate to Difficult
Based On: NCERT Syllabus
Introduction
Nutrition is an essential life process through which organisms obtain food and use it for energy, growth, repair, and maintenance of the body.
In animals, nutrition involves several important steps. Food is first taken into the body, then digested into simpler substances, absorbed into the blood, and finally utilised by the body. Undigested food is removed from the digestive system.
In this Practice Set 9, students will practise questions based on the different stages of nutrition, digestion, absorption, assimilation, egestion, and the functions of digestive organs.
What You Will Learn
✔ Different stages of nutrition in animals
✔ Meaning of ingestion
✔ Meaning of digestion
✔ Meaning of absorption
✔ Meaning of assimilation
✔ Meaning of egestion
✔ Functions of digestive organs
✔ Difference between digestion and absorption
Why This Topic Is Important
The different stages of nutrition explain how food becomes useful to the body. Students need to understand the sequence of these processes rather than simply memorising individual definitions.
These concepts are important for MCQs, short-answer questions, flowcharts, and diagram-based questions in school examinations.
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 sequence correctly represents the major steps of nutrition in animals?
A) Digestion → Ingestion → Egestion → Absorption → Assimilation
B) Ingestion → Digestion → Absorption → Assimilation → Egestion
C) Absorption → Digestion → Ingestion → Assimilation → Egestion
D) Ingestion → Absorption → Digestion → Egestion → Assimilation
Answer:
B) Ingestion → Digestion → Absorption → Assimilation → Egestion
Useful Detail
Nutrition in animals can be understood through five major steps:
Ingestion → Digestion → Absorption → Assimilation → Egestion
- Ingestion: Taking food into the body.
- Digestion: Breaking complex food into simpler substances.
- Absorption: Digested nutrients pass into the blood.
- Assimilation: The body uses the absorbed nutrients.
- Egestion: Undigested food is removed from the body.
Understanding this sequence is important because each stage has a different function.
Correct Answer: B) Ingestion → Digestion → Absorption → Assimilation → Egestion
Q2. What is ingestion?
A) Breaking down food
B) Absorbing nutrients into the blood
C) Taking food into the body
D) Removing undigested food
Answer:
C) Taking food into the body
Useful Detail
Ingestion is the first major step of nutrition.
In humans, food is taken into the body through the mouth. During ingestion, food enters the digestive system and can then undergo digestion.
Ingestion should not be confused with digestion. Digestion is the breakdown of complex food substances into simpler substances.
Correct Answer: C) Taking food into the body
Q3. Which process takes place when the body uses absorbed nutrients for energy, growth, and repair?
A) Ingestion
B) Digestion
C) Assimilation
D) Egestion
Answer:
C) Assimilation
Useful Detail
After digestion, nutrients are absorbed into the blood. The blood transports these nutrients to different parts of the body.
The body then uses the absorbed nutrients for energy, growth, repair, and maintenance. This utilisation is called assimilation.
For example, nutrients obtained from food can be used to provide energy or to build and repair body tissues.
Correct Answer: C) Assimilation
Q4. Which of the following correctly describes egestion?
A) Removal of metabolic wastes from cells
B) Removal of undigested food from the digestive tract
C) Movement of food into the stomach
D) Breakdown of proteins
Answer:
B) Removal of undigested food from the digestive tract
Useful Detail
Egestion is the removal of undigested food from the digestive system.
In humans, undigested material passes into the large intestine, where water is absorbed. The remaining material forms faeces, which are stored temporarily in the rectum and eventually expelled through the anus.
Egestion is different from excretion, which is the removal of metabolic waste products from the body.
Correct Answer: B) Removal of undigested food from the digestive tract
Q5. A student says, “Absorption and assimilation are the same process.” Which statement is correct?
A) The student is correct because both processes occur in the stomach.
B) The student is correct because both mean digestion.
C) The student is incorrect because absorption is entry of digested nutrients into the blood, while assimilation is their utilisation by the body.
D) The student is incorrect because assimilation means egestion.
Answer:
C) The student is incorrect because absorption is entry of digested nutrients into the blood, while assimilation is their utilisation by the body.
Useful Detail
Absorption and assimilation are related but different processes.
During absorption, digested nutrients pass through the wall of the small intestine and enter the blood.
During assimilation, the body uses these absorbed nutrients for energy, growth, repair, and other functions.
Therefore, absorption happens before assimilation.
Correct Answer: C) The student is incorrect because absorption is entry of digested nutrients into the blood, while assimilation is their utilisation by the body.
Important Formulas & Concepts
Science Chapter 2 does not contain mathematical formulas. The following concepts are important for revision.
1. Ingestion
Taking food into the body is called ingestion.
2. Digestion
Breaking complex food substances into simpler substances is called digestion.
3. Absorption
The passage of digested nutrients into the blood is called absorption.
4. Assimilation
The utilisation of absorbed nutrients by the body is called assimilation.
5. Egestion
The removal of undigested food from the body is called egestion.
6. Sequence of Nutrition
The major sequence is:
Ingestion → Digestion → Absorption → Assimilation → Egestion
7. Digestion vs Absorption
Digestion: Food is broken down.
Absorption: Digested nutrients enter the blood.
8. Absorption vs Assimilation
Absorption: Nutrients enter the blood.
Assimilation: Nutrients are used by the body.
Related Practice Questions
Q1. What is ingestion?
Q2. Why is digestion necessary?
Q3. Where does most absorption occur?
Q4. What is assimilation?
Q5. How is egestion different from excretion?
Mini Quiz Challenge
Try answering these questions within 60 seconds.
Q1. The first step of nutrition is:
A) Digestion
B) Ingestion
C) Absorption
D) Assimilation
Q2. The breakdown of complex food into simpler substances is:
A) Digestion
B) Absorption
C) Assimilation
D) Egestion
Q3. Digested nutrients enter the blood during:
A) Ingestion
B) Digestion
C) Absorption
D) Egestion
Q4. The utilisation of absorbed nutrients is called:
A) Assimilation
B) Ingestion
C) Digestion
D) Egestion
Q5. Removal of undigested food is called:
A) Absorption
B) Assimilation
C) Digestion
D) Egestion
Exam Tips
✔ Memorise the five major steps of nutrition.
✔ Remember that ingestion means taking food into the body.
✔ Digestion means breaking down complex food.
✔ Absorption means nutrients enter the blood.
✔ Assimilation means the body uses absorbed nutrients.
✔ Egestion means removal of undigested food.
✔ Do not confuse egestion with excretion.
✔ Remember that absorption occurs mainly in the small intestine.
Quick Revision Notes
✔ Ingestion: Taking food into the body.
✔ Digestion: Breaking complex food into simpler substances.
✔ Absorption: Digested nutrients enter the blood.
✔ Assimilation: Absorbed nutrients are utilised by the body.
✔ Egestion: Undigested food is removed.
✔ Nutrition sequence: Ingestion → Digestion → Absorption → Assimilation → Egestion.
✔ Main absorption site: Small intestine.
Common Mistakes Students Make
❌ Thinking ingestion means digestion.
❌ Confusing absorption with assimilation.
❌ Thinking egestion means removal of metabolic wastes.
❌ Forgetting that absorption occurs after digestion.
❌ Mixing up the order of the five steps.
❌ Assuming that all undigested food is absorbed by the body.
Key Takeaways
✔ Nutrition involves several coordinated processes.
✔ Ingestion is the intake of food.
✔ Digestion converts complex food into simpler substances.
✔ Absorption transfers digested nutrients into the blood.
✔ Assimilation involves the utilisation of absorbed nutrients.
✔ Egestion removes undigested food.
✔ These processes together help animals obtain and utilise nutrients.
FAQs
Q. What are the five major steps of nutrition in animals?
Answer:
The five major steps are:
Ingestion → Digestion → Absorption → Assimilation → Egestion
Q. What is ingestion?
Answer:
Ingestion is the process of taking food into the body.
Q. What is absorption?
Answer:
Absorption is the process by which digested nutrients pass through the intestinal wall and enter the blood.
Q. What is assimilation?
Answer:
Assimilation is the utilisation of absorbed nutrients by the body for energy, growth, repair, and other functions.
Q. What is egestion?
Answer:
Egestion is the removal of undigested food from the digestive tract.
Conclusion
These Class 7 Science Chapter 2 Nutrition in Animals MCQ Questions with Answers and Useful Details – focus on the major stages of nutrition in animals, including ingestion, digestion, absorption, assimilation, and egestion.
Understanding the correct sequence and function of each stage helps students build a strong foundation in nutrition and human digestion.
Related links
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- Class 7 Social Science Chapter 2 Understanding the Weather part-5
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- Class 7 Science Chapter 2 Nutrition in Animals part-7
- Class 7 Social Science Chapter 2 Understanding the Weather part-4
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- Class 7 Science Chapter 2 Nutrition in Animals part-6
- Class 7 Social Science Chapter 2 Understanding the Weather part-3
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