Life Processes in Animals Class 7 Worksheet with Answers Science Chapter 9 - #NCSOLVE 📚

Our subject specific Class 7 Science Curiosity Worksheet and Class 7 Science Chapter 9 Life Processes in Animals Worksheet with Answers Pdf are aligned with latest patterns.

Class 7 Science Chapter 9 Life Processes in Animals Worksheet

Class 7 Life Processes in Animals Worksheet

Worksheet On Life Processes in Animals Class 7 – Life Processes in Animals Worksheet Class 7

A. Objective Type Questions

Multiple Choice Questions

Question 1.
The enzymes present in the saliva convert
(a) fats into fatty acids and glycerol
(b) starch into simple sugars
(c) Proteins into amino acids
(d) complex sugars into simple sugars
Answer:
(b) starch into simple sugars

Question 2.
Below are some food items, listed from (i) to (iv).
(i) Boiled and mashed potatoes
(ii) Glucose solution
(iii) A piece of bread
(iv) Butter
Which of the above will give a blue-black colour when tested with iodine?
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (iii) and (iv)
Answer:
(b) (i) and (iii)

Question 3.
The swallowed food moves downwards in the alimentary canal because of
(a) The force provided by the muscular tongue
(b) The flow of water taken with the food
(c) gravitational pull
(d) The contraction of muscles in the wall of the food pipe
Answer:
(d) The contraction of muscles in the wall of the food pipe

Question 4.
A part of the stomach where food is stored in a cattle is
(a) oesophagus
(b) caecum
(c) rumen
(d) intestine
Answer:
(c) rumen

Question 5.
Choose the correct order that describes the process of nutrition in ruminants.
(a) Swallowing → Partial digestion → Chewing of cud → Complete digestion
(b) Chewing of cud → Swallowing → Partial digestion → Complete digestion
(c) Chewing of cud → Swallowing → Mixing with digestive juices → Digestion
(d) Swallowing → Chewing and mixing → Partial digestion → Complete digestion
Answer:
(b) Chewing of cud → Swallowing → Partial digestion → Complete digestion

Question 6.
During the process of breathing, after taking in the air through the nostrils, where does it move next?
(a) Lungs
(b) Nasal cavity
(c) Chest cavity
(d) Trachea
Answer:
(b) Nasal cavity

Question 7.
During the process of exhalation, the diaphragm and ribs respectively move
(a) down and inwards
(b) up and inwards
(c) down and outwards
(d) up and downwards
Answer:
(b) up and inwards

Question 8.
When we breathe in air, we also take in dust, smoke, pollen, and other particles. How does our body deal with these unwanted particles?
I. They get trapped in the tiny hairs in the nose.
II. The lungs absorb these and send them out as waste.
III. Sometimes they are instantly thrown out through sneezing.
IV. The volume of the lungs increases by these unwanted particles.
Choose the correct statement.
(a) Only I
(b) Both I and II
(c) Both I and III
(d) Both II and IV
Answer:
(c) Both I and III

Question 9.
What happens to lime water when we blow air through it?
(a) Bubbles are released
(b) It turns milky
(c) It turns bluish
(d) Precipitates are formed
Answer:
(b) It turns milky

Question 10.
The diagram below shows a model of the human respiratory system.

What do the glass tube, bell jar, balloons, and rubber sheet represent?

Glass Tube	Bell Jar	Balloons	Rubber Sheet
(a) Ribcage	Lungs	Windpipe	Diaphragm
(b) Windpipe	Ribcage	Lungs	Diaphragm
(c) Ribcage	Windpipe	Diaphragm	Lungs
(d) Diaphragm	Lungs	Ribcage	Windpipe

Answer:

Question 11.
Which of the following animals does not use lungs for breathing?
(a) Humans
(b) Frog
(c) Fish
(d) Fox
Answer:
(c) Fish

Question 12.
Which of the following is correct?
(a) Gills in fishes are extra-respiratory organs
(b) Earthworms respire through their skin
(c) Frogs breathe through their skin only
(d) All of the above
Answer:
(b) Earthworms respire through their skin

Fill in the Blanks

Question 1.
Fill in the blanks by choosing the correct word in each of the following sentences.
(a) Digestion of food starts in the mouth and gets completed in the ____________. (small intestine/buccal cavity)
(b) The saliva breaks down the ____________. (sugars/starch)
(c) In birds, digestion begins in the ____________, where food is temporarily stored, (stomach/ rumen)
(d) All living organisms ____________ get energy from food. (respires/digests)
(e) In the cells ____________ inhaled air helps in the breakdown of food. (oxygen/CO2)
Answer:
(a) small intestine
(b) starch
(c) stomach
(d) respires
(e) oxygen

Question 2.
Complete the given paragraph about the digestive system of a cow by using the suitable words from the box provided below.

Cow is a (a) ____________ animal and has a large sac-like structure called (b) ____________ between the small intestine and (c) ____________. The (d) ____________ of the food is digested here by the action of certain (e) ____________ which are not present in other animals like (f) ____________.
Answer:
(a) ruminant
(b) rumen
(c) oesophagus
(d) cellulose
(e) bacteria
(f) humans

True/False

Question 1.
Write ‘T’ for true or ‘F’ for false for the following statements.
(a) Salivary glands release hydrochloric acid.
(b) The saliva breaks down the starch into sugars.
(c) Iodine can turn a starch solution red.
(d) The large intestine of the human alimentary canal is longer and wider than the small intestine.
(e) Complete digestion of fats takes place in the large intestine.
Answer:
(a) F
(b) T
(c) F
(e) F
(d) F

Question 2.
Write “Yes” for the right statement and “No” for the wrong statement.
(a) The size of the chest cavity increases during inhalation.
(b) Alveoli (in humans) are responsible for gas exchange.
(c) In cellular respiration, glucose is broken down using oxygen to release energy.
(d) Fishes breathe through a blowhole in their fins.
(e) Frogs and earthworms both can breathe through their skin as well as their lungs.
Answer:
(a) Yes
(b) Yes
(c) Yes
(d) No
(e) No

Match the Following

Question 1.
Match the given parts of Column I to their appropriate functions given in Column II.

Column I	Column II
(a) Buccal cavity	(i) Inhalation
(b) Liver	(ii) Absorption of water
(c) Large intestine	(iii) Diaphragm
(d) Taking in of oxygen-rich air	(iv) Chewing of food
(e) The floor on which the ribs rest	(v) Secretion of bile juice

Answer:

Column I	Column II
(a) Buccal cavity	(iv) Chewing of food
(b) Liver	(v) Secretion of bile juice
(c) Large intestine	(ii) Absorption of water
(d) Taking in of oxygen-rich air	(i) Inhalation
(e) The floor on which the ribs rest	(iii) Diaphragm

Question 2.
Match Column I with Column II.

Answer:
(a) (iv)
(b) (v)
(c) (ii)
(d) (iii)
(e) (i)

Assertion-Reason Questions

The questions given below consist of an Assertion and a Reason. Based on that, choose the appropriate option.
(a) Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
(c) The assertion is true, but the Reason is false.
(d) The assertion is false, but the Reason is true.

Question 1.
Assertion: Salivary glands, liver, and pancreas are the various glands associated with the alimentary canal.
Reason: The breakdown of complex components of food into simpler substances is called digestion.
Answer:
(b) Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.

Question 2.
Assertion: Grass-eating animals are called ruminants.
Reason: Ruminants quickly swallow the grass and store it in a part of the stomach called the rumen, which later returns to the mouth for further digestion.
Answer:
(b) Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.

Question 3.
Assertion: Breathing involves the movement of the diaphragm and the rib cage.
Reason: During inhalation, both the ribs and diaphragm move up to increase the thoracic cavity.
Answer:
(c) The assertion is true, but the Reason is false. Reason can be corrected as follows: during inhalation, the diaphragm moves down (not up), and the ribs move up and out. These movements increase the volume of the thoracic cavity.

Question 4.
Assertion: Earthworms breathe through their skin.
Reason: Insects have a network of air tubes called trachea for gas exchange.
Answer:
(b) Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.

Question 5.
Assertion: Gills in fish help them to use the oxygen available in the air.
Reason: Gills are well supplied with blood vessels for the exchange of gases.
Answer:
(d) The assertion is false, but the Reason is true. Assertion can be corrected as Gills help fish to use the oxygen available in water, not air.

Case-Based Questions

Aanya attended a workshop, where she learned how traditional breathing practices improve health. She discovered that Pranayama (from India) uses slow inhalation and exhalation to relax the mind and strengthen the lungs. In Ladakh, people use Tummo breathing to stay warm and support lung function in cold weather. Some cultures also combine deep breathing with chanting to calm the body and improve focus.

Question 1.
What happens when Aanya takes deep breaths in and out slowly?
(a) Her heart beats faster
(b) She becomes more sleepy
(c) She feels more relaxed and focused
(d) She starts sweating
Answer:
(c) She feels more relaxed and focused

Question 2.
Which part of the breathing process involves taking air into the lungs?
(a) Circulation
(b) Digestion
(c) Exhalation
(d) Inhalation
Answer:
(d) Inhalation

Question 3.
What happens to the diaphragm during deep inhalation, while practicing pranayama?
(a) It moves upward and relaxes
(b) It remains stationary
(c) It moves downward and contracts
(d) It expands sideways
Answer:
(c) It moves downward and contracts

B. Subjective Type Questions

Define the Following Terms

Question 1.
Buccal cavity
___________________________________________________

Question 2.
Egestion
___________________________________________________

Question 3.
Cud
___________________________________________________

Question 4.
Rumination
___________________________________________________

Question 5.
Nostrils
___________________________________________________

Question 6.
Diaphragm
___________________________________________________

Very Short Answer Type Questions

Question 1.
What constitutes a digestive system?
___________________________________________________

Question 2.
What is the action of saliva on the food?
___________________________________________________

Question 3.
What carries food to the stomach from the mouth?
___________________________________________________

Question 4.
Name the scientist who discovered the working of the stomach by observing digestion through a patient’s stomach wound.
___________________________________________________

Question 5.
X is the condition in which the body shows a harmful reaction to gluten, a protein found in wheat, barley, and rye. Identify the condition.
___________________________________________________

Question 6.
What do you understand by cellular respiration?
___________________________________________________

Question 7.
Name the balloon-like structure found in the lungs.
___________________________________________________

Question 8.
Name one bad habit that can cause lung cancer.
___________________________________________________

Question 9.
X is the organism that can respire through lungs and skin. Identify the X.
___________________________________________________

Question 10.
Through which body part do earthworms respire?
___________________________________________________

Short Answer Type Questions

Question 1.
Given below is a diagram showing the human digestive system. Correct the labelling and also label the other missing parts.

___________________________________________________
___________________________________________________

Question 2.
How can you prevent tooth decay?
___________________________________________________
___________________________________________________

Question 3.
Rohit took some grains of boiled rice in test tube ‘A’, and Seema took boiled and chewed rice in test tube ‘B’. Both of them poured 1-2 drops of iodine solution into the test tube and observed the colour change. What colour change would they have observed? Give reasons for your answer.
___________________________________________________
___________________________________________________

Question 4.
Write a short note on the discovery of the working of the stomach.
___________________________________________________
___________________________________________________

Question 5.
What is the role of the small intestine?
___________________________________________________
___________________________________________________

Question 6.
Describe the process of digestion in birds.
___________________________________________________
___________________________________________________

Question 7.
Differentiate between breathing and respiration.
___________________________________________________
___________________________________________________

Question 8.
Observe the given figure and answer the following questions:

(a) Which process is being tested in the activity?
(b) What gas is primarily responsible for the change in the lime water’s appearance when you blow through the straw?
___________________________________________________
___________________________________________________

Long Answer Type Questions

Question 1.
Identify the labelled parts in the given figure of the human digestive system and write the characteristic feature of each of them.

___________________________________________________
___________________________________________________

Question 2.
Bile juice is secreted by the liver and plays a key role in the digestion of fats. It is released into the small intestine when food arrives there. Although bile juice does not contain any digestive enzymes, it is essential for fat digestion. Fats are more difficult to digest than other nutrients because they are insoluble in water and exist as large globules. Bile juice helps by breaking down these large fat droplets into smaller ones, a process called emulsification. This makes it easier for enzymes from the pancreas to further digest the fats.

(a) Which organ secretes the bile juice?
___________________________________________________
___________________________________________________

(b) Why is the digestion of fats more difficult compared to that of other nutrients?
___________________________________________________
___________________________________________________

(c) How does the bile juice help in the digestion of fat?
___________________________________________________
___________________________________________________

(d) Where is the digestion of fat completed?
___________________________________________________
___________________________________________________

(e) Does bile juice digest the fat completely?
___________________________________________________
___________________________________________________

Question 3.
Describe the process of nutrition in ruminants.
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________

Question 4.
What path does the air that we breathe in follow in our body? Also, explain the mechanism of breathing in humans.
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________

Question 5.
Explain how different animals breathe according to their habitats. Describe the breathing organs used by terrestrial animals, aquatic animals, amphibians, and earthworms.
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________

Skill-Based Questions

Question 1.
Choose the odd one out and justify your answer.
(i) Stomach, liver, pancreas, large intestine
___________________________________________________

(ii) Assimilation, absorption, talking, swallowing
___________________________________________________

(iii) Oesophagus, small intestine, large intestine, stomach
___________________________________________________

(iv) Nostrils, trachea, gills, alveoli
___________________________________________________

(v) Snake, tadpole, crow, goat
___________________________________________________

Question 2.
Given below is a square of letters in which are hidden different words related to respiration in organisms. Find out these words with the help of the clues given below.

(i) Tube-like structures that pass from the nasal passage through the bronchi.
___________________________________________________

(ii) Skeletal structures surrounding the chest cavity.
___________________________________________________

(iii) Muscular floor of the chest cavity.
___________________________________________________

(iv) The respiratory organs of human beings.
___________________________________________________

(v) The openings through which we inhale.
___________________________________________________

Question 3.
Identify the following words with the help of the hints given.
(i) The breakdown of food to produce energy and carbon dioxide.
_ _ _ _ I _ _ _ _ _ N

(ii) Releasing carbon dioxide-rich air from the body.
_ _ _ _ O _

(iii) The openings of our nose.
_ _ _ _ R _ _ _

(iv) Breathing organ of most terrestrial animals.
_ _ _ G _

(v) Projections of skin present in fish for breathing.
_ I _ _ _

(vi) The gas produced in plants as a result of respiration.
_ _ _ _ _ N _ _ _ X _ _ _

The post Life Processes in Animals Class 7 Worksheet with Answers Science Chapter 9 appeared first on Learn CBSE.

📚 NCsolve - Your Global Education Partner 🌍

Empowering Students with AI-Driven Learning Solutions

Welcome to NCsolve — your trusted educational platform designed to support students worldwide. Whether you're preparing for Class 10, Class 11, or Class 12, NCsolve offers a wide range of learning resources powered by AI Education.

Our platform is committed to providing detailed solutions, effective study techniques, and reliable content to help you achieve academic success. With our AI-driven tools, you can now access personalized study guides, practice tests, and interactive learning experiences from anywhere in the world.

🔎 Why Choose NCsolve?

At NCsolve, we believe in smart learning. Our platform offers:

• ✅ AI-powered solutions for faster and accurate learning.
• ✅ Step-by-step NCERT Solutions for all subjects.
• ✅ Access to Sample Papers and Previous Year Questions.
• ✅ Detailed explanations to strengthen your concepts.
• ✅ Regular updates on exams, syllabus changes, and study tips.
• ✅ Support for students worldwide with multi-language content.

🌐 Explore Our Websites:

🔹 ncsolve.blogspot.com
🔹 ncsolve-global.blogspot.com
🔹 edu-ai.blogspot.com

📲 Connect With Us:

👍 Facebook: NCsolve
📧 Email: ncsolve@yopmail.com

#NCsolve #EducationForAll #AIeducation #WorldWideLearning #Class10 #Class11 #Class12 #BoardExams #StudySmart #CBSE #ICSE #SamplePapers #NCERTSolutions #ExamTips #SuccessWithNCsolve #GlobalEducation