Welcome To My School Study
Practice Class 7 Science Chapter 2 Nutrition in Animals MCQ Questions with Answers and Useful Details based on the NCERT syllabus. Learn about digestion in ruminants, cud chewing, rumen, microbes, and digestion in grass-eating animals.
Do You Know
Chapter Information
Subject: Science
Class: 7
Chapter: Nutrition in Animals
Question Type: Multiple Choice Questions (MCQs)
Practice Set: 6
Difficulty Level: Moderate
Based On: NCERT Syllabus
Introduction
Different animals have different feeding habits and digestive systems depending on the type of food they consume. Grass-eating animals such as cows, buffaloes, and deer have a special digestive system that helps them digest plant material efficiently.
These animals are called ruminants. They can bring partially digested food back into their mouth and chew it again. This process is known as rumination, and the regurgitated food is called cud.
This Practice Set 6 focuses on ruminants, cud chewing, the rumen, microorganisms, and the digestion of plant material.
What You Will Learn
✔ Meaning of ruminants
✔ Process of rumination
✔ Meaning of cud
✔ Role of the rumen
✔ Importance of microorganisms
✔ Digestion of cellulose
✔ Feeding habits of grass-eating animals
Why This Topic Is Important
Ruminants have a specialised digestive system that allows them to obtain nutrients from plant-based food. Their digestive process is different from that of humans.
Understanding rumination and the role of microorganisms helps students understand how animals digest cellulose and other components of plant food.
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 of the following animals is a ruminant?
A) Lion
B) Cow
C) Cat
D) Eagle
Answer:
B) Cow
Useful Detail
A cow is a ruminant animal. Other examples include buffaloes, goats, sheep, and deer.
Ruminants mainly eat plant-based food. Their digestive system is specially adapted to process plant material containing cellulose.
They bring partially digested food back to the mouth and chew it again. This process is called rumination.
Correct Answer: B) Cow
Q2. What is the partially digested food brought back from the stomach of a ruminant into its mouth called?
A) Bolus
B) Cud
C) Chyme
D) Saliva
Answer:
B) Cud
Useful Detail
The partially digested food that a ruminant brings back from its stomach into the mouth is called cud.
The animal chews the cud thoroughly before swallowing it again. This process helps break down plant material into smaller pieces and supports further digestion.
The repeated chewing of cud is called rumination.
Correct Answer: B) Cud
Q3. Which substance present in plant food is difficult for humans to digest but can be digested by ruminants with the help of microorganisms?
A) Glucose
B) Cellulose
C) Water
D) Minerals
Answer:
B) Cellulose
Useful Detail
Cellulose is an important component of plant cell walls.
Humans cannot digest cellulose because they do not produce the enzyme required to break it down. Ruminants, however, contain special microorganisms in their digestive system that help break down cellulose.
These microorganisms make it possible for ruminants to obtain nutrients from grass and other plant materials.
Correct Answer: B) Cellulose
Q4. In which part of a ruminant’s stomach does food remain for some time and undergo microbial digestion?
A) Rumen
B) Oesophagus
C) Small intestine
D) Large intestine
Answer:
A) Rumen
Useful Detail
The rumen is the largest compartment of the stomach of a ruminant.
Food first enters the rumen, where it is stored temporarily and mixed with microorganisms. These microorganisms help break down cellulose and other plant materials.
The food can later be brought back to the mouth as cud for further chewing.
Correct Answer: A) Rumen
Q5. Why do ruminants chew their cud?
A) To increase the amount of water in food
B) To break food into smaller pieces and aid digestion
C) To remove all nutrients from food
D) To stop digestion temporarily
Answer:
B) To break food into smaller pieces and aid digestion
Useful Detail
Ruminants often swallow grass quickly and later bring the partially digested food back into the mouth.
They chew this cud thoroughly, breaking the plant material into smaller pieces. This increases the surface area available for further digestion and helps the animal process fibrous food more effectively.
This process is called rumination.
Correct Answer: B) To break food into smaller pieces and aid digestion
Important Formulas & Concepts
Science Chapter 2 does not require mathematical formulas. Important scientific concepts are given below.
1. Ruminants
Animals such as cows, buffaloes, goats, sheep, and deer that chew their cud are called ruminants.
2. Rumination
The process of bringing partially digested food back into the mouth and chewing it again is called rumination.
3. Cud
The partially digested food brought back into the mouth by a ruminant is called cud.
4. Rumen
The rumen is the largest compartment of the stomach of a ruminant and contains microorganisms that help digest plant material.
5. Cellulose
Cellulose is a complex carbohydrate found in plant cell walls. Ruminants can digest it with the help of microorganisms.
6. Microorganisms
Microorganisms present in the digestive system of ruminants help break down cellulose and other plant materials.
Related Practice Questions
Q1. What are ruminants?
Q2. What is rumination?
Q3. Why can cows digest grass efficiently?
Q4. What is the role of microorganisms in the rumen?
Q5. Why is cellulose difficult for humans to digest?
Mini Quiz Challenge
Try answering these questions within 60 seconds.
Q1. Which animal is a ruminant?
A) Dog
B) Cow
C) Tiger
D) Eagle
Q2. The partially digested food brought back to the mouth is called:
A) Cud
B) Bile
C) Saliva
D) Chyme
Q3. Ruminants can digest cellulose mainly because of:
A) Teeth only
B) Microorganisms
C) Water
D) Bile only
Q4. The largest compartment of a ruminant’s stomach is:
A) Rumen
B) Rectum
C) Oesophagus
D) Pancreas
Q5. Rumination involves:
A) Swallowing food only once
B) Bringing food back to the mouth and chewing it again
C) Removing food from the body
D) Absorbing water in the intestine
Exam Tips
✔ Remember examples of ruminants such as cow, buffalo, goat, sheep, and deer.
✔ Learn the difference between cud and rumination.
✔ Remember that the rumen contains microorganisms.
✔ Cellulose is an important component of plant food.
✔ Humans cannot digest cellulose effectively.
✔ Ruminants chew cud to help break down fibrous plant food.
✔ Read digestive-system diagrams carefully when preparing for exams.
Quick Revision Notes
✔ Ruminants: Animals that chew cud.
✔ Rumination: Bringing partially digested food back to the mouth and chewing it again.
✔ Cud: Partially digested food brought back into the mouth.
✔ Rumen: Largest compartment of a ruminant’s stomach.
✔ Cellulose: Complex carbohydrate found in plant cell walls.
✔ Microorganisms: Help ruminants digest cellulose.
✔ Cow: Common example of a ruminant.
Common Mistakes Students Make
❌ Thinking that all animals digest food in exactly the same way.
❌ Confusing cud with saliva.
❌ Thinking that rumination means swallowing food.
❌ Forgetting the role of microorganisms in cellulose digestion.
❌ Thinking that humans can digest cellulose in the same way as ruminants.
❌ Confusing the rumen with the small intestine.
Key Takeaways
✔ Ruminants have a specialised digestive system.
✔ Cows, buffaloes, goats, sheep, and deer are examples of ruminants.
✔ Ruminants bring partially digested food back into the mouth.
✔ The regurgitated food is called cud.
✔ Chewing cud is called rumination.
✔ The rumen contains microorganisms.
✔ These microorganisms help digest cellulose.
✔ Rumination helps ruminants process fibrous plant food efficiently.
FAQs
Q. What are ruminants?
Answer:
Ruminants are animals that can bring partially digested food back into their mouth and chew it again. Examples include cows, buffaloes, goats, sheep, and deer.
Q. What is cud?
Answer:
Cud is partially digested food that a ruminant brings back from its stomach into the mouth for further chewing.
Q. What is rumination?
Answer:
Rumination is the process of bringing partially digested food back into the mouth and chewing it again.
Q. Why can ruminants digest cellulose?
Answer:
Ruminants have microorganisms in their digestive system that help break down cellulose present in plant food.
Q. What is the rumen?
Answer:
The rumen is the largest compartment of a ruminant’s stomach. It contains microorganisms that help digest plant material.
Conclusion
These Class 7 Science Chapter 2 Nutrition in Animals MCQ Questions with Answers and Useful Details – focus on ruminants, cud, rumination, the rumen, cellulose, and microorganisms.
Understanding these concepts helps students learn how grass-eating animals digest fibrous plant food and why their digestive system is different from that of humans.
Related links
- Class 7 Social Science Chapter 2 Understanding the Weather part-3
- Class 7 English Chapter 2 The Wise Man part-11
- Class 7 Maths Chapter 4 Simple Equations part-11
- Class 7 Science Chapter 2 Nutrition in Animals part-5
- Class 7 Social Science Chapter 2 Understanding the Weather part-2
- Class 7 English Chapter 2 The Wise Man part-3
- Class 7 Maths Chapter 4 Simple Equations part-10
- Class 7 Science Chapter 2 Nutrition in Animals part-4
- Class 7 Social Science Chapter 2 Understanding the Weather part-1
- Class 7 English Chapter 2 The Wise Man part-2
Latest Posts
- Class 9 English Chapter 2 The Pot Maker
- Class 8 English Chapter 2 A Concrete Example
- Class 10 English Chapter 2 Nelson Mandela: Long Walk to Freedom
- Class 7 English Chapter 2 The Wise Man
- Class 10 Science Chapter 2 Acids, Bases and Salts
Join Our Other Communities
Instagram , Youtube , Facebook
