AP 5th Class EVS Workbook Answers – 4. Our Body - Our Organ Systems(2026-27)

Class 5 EVS – 4. Our Body - Our Organ Systems

Workbook Solutions — Lesson-style format. Questions are in black and answers are in blue. Content follows the uploaded workbook page-by-page.

WORKSHEET – 1

Concept: Organs in our body & the skeletal system

I. Rewrite the following words two times.

Word	Answer	Word	Answer	Word	Answer
Organs	Organs, Organs	Internal organs	Internal organs, Internal organs	External organs	External organs, External organs
Machine	Machine, Machine	Together	Together, Together	Structures	Structures, Structures
Rib cage	Rib cage, Rib cage	Backbone	Backbone, Backbone	Cartilage	Cartilage, Cartilage
Skeleton	Skeleton, Skeleton

II. True (T) or False (F)

1. Organs are classified as internal and external based on their functionality.
   False (F)
2. Some organs in our body do not have any functionality. They are just for beauty.
   False (F)
3. Only external organs work together to perform the body functions.
   False (F)
4. The skeletal system supports our body movements with the support of muscles.
   True (T)
5. The protection of all body parts is an important function of bones.
   False (F) — Bones protect important internal organs.

III. Read the following paragraph and answer the given questions.

Our body has different organs that work together to keep us alive and healthy, just like the parts of a machine. Some organs are external organs because they are visible from outside, such as the head, hands, and legs. These organs help us see, hold things, walk, and do many activities. Some organs are internal organs because they are inside our body and cannot be seen directly from outside, like the brain, heart, lungs, liver, kidneys, etc. The brain controls our actions, the heart pumps blood, the lungs help us breathe, and the kidneys remove waste. When all organs work properly and together, our body will stay fit and healthy.

www.meebadi.in – Page 2

Now, answer the following questions.

1. Why is the brain important?
   The brain is important because it controls our actions and helps us think, feel and respond.
2. Explain one activity that denotes the collective work of both internal and external organs.
   Playing a game is one example. The brain controls the activity, the heart pumps blood, the lungs supply oxygen, while the hands and legs help us move and play.
3. Why is it important to take care of both internal and external organs?
   Both internal and external organs perform important functions. Taking care of them helps all organs work properly and keeps us fit and healthy.
4. When will we stay fit and healthy?
   We stay fit and healthy when all our organs work properly and work together.

IV. Multiple Choice Questions

1. Which option correctly matches an organ with its category?
   A) Brain – External organ

   B) Lung – Internal organ

   C) Hand – Internal organ

   D) Eye – Internal organ
   Answer: B) Lung – Internal organ
2. A student lists: heart, kidney, leg, liver. Which classification is correct?
   A) Heart and leg are internal; kidney and liver are external

   B) All are external organs

   C) Heart, kidney and liver are internal; leg is external

   D) All are internal organs
   Answer: C) Heart, kidney and liver are internal; leg is external
3. How do bones help in body movements?
   A) Bones alone move the body without help

   B) Bones produce energy for the body

   C) Bones work together with muscles and joints to help movement

   D) Bones store air for breathing
   Answer: C) Bones work together with muscles and joints to help movement
4. What is the main role of the rib cage?
   A) It helps in bending the body

   B) It protects the heart and lungs

   C) It balances the body

   D) It helps in digestion
   Answer: B) It protects the heart and lungs

www.meebadi.in – Page 3

V. Answer the following questions in two or three sentences.

1. Name the organ systems in the human body.
   The main organ systems discussed in this lesson are the skeletal, digestive, respiratory, circulatory, excretory and nervous systems.
2. Which organ system is responsible for movement of our body?
   The skeletal system works with muscles and joints to help in the movement of our body.
3. As our bones grow longer, what happens to our body? Explain.
   As our bones grow longer, our body grows in height and size. Bone growth is an important part of physical growth.

VI. Answer the following questions in four or five sentences.

1. How is an internal organ different from an external organ? Explain.
   An internal organ is located inside the body and cannot be seen directly from outside. Examples include the brain, heart, lungs, liver and kidneys. An external organ is visible from outside the body. Examples include the hands, legs and head. Both types of organs perform important functions.
2. Explain the following four important functions of the human skeletal system: Support, Protection, Movement, Giving shape.
   Support: Bones support the body and help us stand. Protection: Bones protect important organs, such as the brain, heart and lungs. Movement: Bones work with muscles and joints to help body movement. Giving shape: The skeleton gives shape and structure to our body.

www.meebadi.in – Page 4

WORKSHEET – 2

Concept: Digestive system and getting energy

I. Rewrite the following words two times.

Word	Answer	Word	Answer	Word	Answer
Stomach	Stomach, Stomach	Digestion	Digestion, Digestion	Nutrients	Nutrients, Nutrients
Absorbable	Absorbable, Absorbable	Enzymes	Enzymes, Enzymes	Saliva	Saliva, Saliva
Oesophagus	Oesophagus, Oesophagus	Intestine	Intestine, Intestine	Rectum	Rectum, Rectum
Anus	Anus, Anus

II. True (T) or False (F)

1. The digestive system helps our body break down food into complex substances.
   False (F) — It breaks food down into simpler substances.
2. The mouth is the first part of the digestive system and small intestine is the last one.
   False (F)
3. Nutrients from digested food are absorbed mainly in the small intestine.
   True (T)
4. The large intestine helps absorb water and prepare waste for elimination.
   True (T)

III. Read the following conversation and answer the given questions.

Vikram: Tanuja, have you ever thought about how our body gets energy from the food we eat?
Tanuja: Yes, Vikram! It’s because of our digestive system. Digestion actually starts in the mouth.
Vikram: What happens there first?
Tanuja: Our teeth chew the food, and saliva softens it so it can be swallowed easily.
Vikram: Then the food goes straight to the stomach, right?
Tanuja: Yes, it moves through the food pipe to the stomach, where it is mixed and broken down further.
Vikram: Where does the body get energy from the food?
Tanuja: In the small intestine, nutrients are absorbed into the blood to give us energy.
Vikram: And what happens to the waste?
Tanuja: The large intestine absorbs water and forms waste. Eating a balanced diet keeps our digestive system healthy and smooth.

www.meebadi.in – Page 6

Now, answer the given questions.

1. What happens to the food we eat in the mouth?
   Our teeth chew the food and saliva softens it. This makes the food easier to swallow.
2. What problems might occur if nutrients are not absorbed properly in the small intestine?
   The body may not get enough nutrients and energy. This can lead to weakness and poor growth.
3. How would a lack of a balanced diet affect the working of the digestive system?
   A lack of a balanced diet can affect digestion and may prevent the body from getting the nutrients it needs. Eating a balanced diet helps the digestive system work properly.

IV. Multiple Choice Questions

1. Where are the nutrients absorbed into the blood?
   A) Stomach

   B) Large intestine

   C) Mouth

   D) Small intestine
   Answer: D) Small intestine
2. Which organ absorbs water from undigested food?
   A) Small intestine

   B) Stomach

   C) Large intestine

   D) Liver
   Answer: C) Large intestine
3. The food pipe is also known as:
   A) Trachea

   B) Oesophagus

   C) Intestine

   D) Windpipe
   Answer: B) Oesophagus
4. What is the main duty of the stomach?
   A) Absorb water

   B) Chew food

   C) Mix and break down food

   D) Store the waste
   Answer: C) Mix and break down food

www.meebadi.in – Page 7

V. Answer the following questions in two or three sentences.

1. Write the pathway of food in the digestive system.
   Mouth → Oesophagus (food pipe) → Stomach → Small intestine → Large intestine → Rectum → Anus.
2. Name all the organs of the digestive system.
   The main organs are mouth, oesophagus, stomach, small intestine, large intestine, rectum and anus.
3. Draw and label the parts of the human digestive system.
   Label the diagram with: Mouth → Oesophagus → Stomach → Small intestine → Large intestine → Rectum → Anus.
   DIGESTIVE SYSTEM DIAGRAM SPACE
   Labels: Mouth • Oesophagus • Stomach • Small intestine • Large intestine • Rectum • Anus

www.meebadi.in – Page 8

VI. Answer the following questions in four or five sentences.

1. After eating food, what happens to the food inside your body? Name and explain the system involved.
   The digestive system processes the food we eat. Digestion starts in the mouth, where teeth chew food and saliva softens it. Food then passes through the oesophagus to the stomach, where it is mixed and broken down. Nutrients are absorbed mainly in the small intestine. The large intestine absorbs water and prepares the waste for elimination.
2. Why is it important to eat healthy food for the proper working of organ systems?
   Healthy food provides the nutrients and energy needed by the body. A balanced diet helps the digestive system work properly and supplies nutrients to all body parts. Good food habits help the organ systems work together and keep us healthy.

www.meebadi.in – Page 9

WORKSHEET – 3

Concept: Respiratory system and respiration process

I. Rewrite the following words two times.

Word	Answer	Word	Answer	Word	Answer
Breathing	Breathing, Breathing	Respiration	Respiration, Respiration	Windpipe	Windpipe, Windpipe
Lungs	Lungs, Lungs	Energy	Energy, Energy	Exhalation	Exhalation, Exhalation
Inhalation	Inhalation, Inhalation	Spongy	Spongy, Spongy	Oxygen	Oxygen, Oxygen
Carbon dioxide	Carbon dioxide, Carbon dioxide

II. Fill in the blanks.

1. The process of taking oxygen in and giving carbon dioxide out is __________.
   Answer: respiration
2. Taking air into the lungs is called __________.
   Answer: inhalation
3. Breathing out carbon dioxide from the lungs is called __________.
   Answer: exhalation

III. Read the following paragraph and answer the given questions.

Hi children! Do you know who I am? I am the respiratory system of your body. And I work nonstop to keep you alive. Every breath begins at the nose, where I welcome fresh air. I guide it down the windpipe and into the lungs, my soft and spongy homes. Here, I collect oxygen and pass it into the blood like a precious gift. Your cells use this oxygen to release energy from food, helping you move, think, and play. While I do this, I gather carbon dioxide, a waste gas. I send it back to the lungs and push it out. Breath by breath, I keep you active, healthy, and alive.

www.meebadi.in – Page 10

Questions

1. Name the main parts of the respiratory system mentioned in the paragraph.
   The main parts mentioned are the nose, windpipe and lungs.
2. Which system in our body works nonstop to keep us alive?
   The respiratory system works nonstop to keep us alive.
3. How do our cells use the oxygen we breathe?
   Our cells use oxygen to release energy from food. This energy helps us move, think and play.

IV. Multiple Choice Questions

1. Which organs are part of the respiratory system?
   A) Nose, stomach, lungs

   B) Nose, windpipe, lungs

   C) Heart, lungs, brain

   D) Mouth, liver, kidney
   Answer: B) Nose, windpipe, lungs
2. What happens to the lungs during inhalation?
   A) They shrink

   B) They stop working

   C) They get enlarged

   D) They dry up
   Answer: C) They get enlarged
3. Which gas in inhaled air helps release energy from food?
   A) Nitrogen

   B) Oxygen

   C) Carbon dioxide

   D) Hydrogen
   Answer: B) Oxygen
4. What is the process of breathing out called?
   A) Inhalation

   B) Respiration

   C) Exhalation

   D) Circulation
   Answer: C) Exhalation
5. Which gas is exhaled from the body after energy is released?
   A) Oxygen and blood

   B) Carbon dioxide and water vapour

   C) Nitrogen and oxygen

   D) Only oxygen
   Answer: B) Carbon dioxide and water vapour

www.meebadi.in – Page 11

V. Answer the following questions in two or three sentences.

1. How does the respiratory system help our body?
   The respiratory system brings oxygen into the body and sends carbon dioxide out. Oxygen is passed into the blood and helps cells release energy from food.
2. Compare the digestive system and the respiratory system.
   The digestive system breaks down food and absorbs nutrients. The respiratory system takes in oxygen and removes carbon dioxide. Both systems help provide the body with what it needs to stay alive and healthy.
3. Draw and label the parts of the human respiratory system.
   Label the diagram with: Nose → Windpipe → Lungs.
   RESPIRATORY SYSTEM DIAGRAM SPACE
   Labels: Nose • Windpipe • Lungs

www.meebadi.in – Page 12

VI. Answer the following questions in four or five sentences.

1. Describe the main parts of the human respiratory system and state one function of each part. (Nose, windpipe, lungs)
   The nose is where air enters the body. The windpipe carries air down towards the lungs. The lungs are soft and spongy organs where oxygen enters the blood and carbon dioxide is collected for removal. Together, these parts help us breathe and stay alive.
2. What happens to the air we breathe in? Explain how oxygen is used by the body and how carbon dioxide is sent out.
   Air enters through the nose and travels down the windpipe to the lungs. Oxygen from the air passes into the blood. Body cells use oxygen to release energy from food. Carbon dioxide, produced as a waste gas, is carried back to the lungs and pushed out during exhalation.

www.meebadi.in – Page 13

WORKSHEET – 4

Concept: Circulatory system and making a stethoscope

I. Rewrite the following words two times.

Word	Answer	Word	Answer	Word	Answer
Stethoscope	Stethoscope, Stethoscope	Heart	Heart, Heart	Arteries	Arteries, Arteries
Veins	Veins, Veins	Pulmonary	Pulmonary, Pulmonary	Blood vessels	Blood vessels, Blood vessels
Circulation	Circulation, Circulation	Deoxygenated	Deoxygenated, Deoxygenated	Ventricles	Ventricles, Ventricles
Haemoglobin	Haemoglobin, Haemoglobin

II. Match the following.

Set – A	Set – B	Answer
1. Blood vessels	A. Oxygenated blood from heart to body parts (except to lungs)	1 – D
2. Arteries	B. Deoxygenated blood from body parts to heart (except from lungs)	2 – A
3. Veins	C. Oxygenated blood from lungs to heart	3 – B
4. Pulmonary arteries	D. Means of transport of blood throughout the body	4 – E
5. Pulmonary veins	E. Deoxygenated blood from heart to lungs	5 – C

III. Observe the following mind map and answer the given questions.

Human Circulatory System: Main parts — Heart, Blood, Blood vessels (arteries & veins). Functions of the heart — acts like a pump and pushes blood to all parts of the body. Functions of blood — carries oxygen to cells, carries nutrients to cells and removes wastes like carbon dioxide. Functions of blood vessels — arteries carry blood away from the heart, veins bring blood back to the heart, and blood vessels form a network in the body. Importance — keeps the body warm, fights infection, supports growth and energy, and keeps the body strong and balanced.

www.meebadi.in – Page 14

1. Write the name of the organ that pumps blood.
   The heart.
2. State two functions of blood as shown in the diagram.
   Blood carries oxygen to cells and carries nutrients to cells. It also removes wastes like carbon dioxide.
3. Differentiate between arteries and veins based on their functions.
   Arteries carry blood away from the heart to body parts. Veins bring blood back from body parts to the heart.

IV. Multiple Choice Questions

1. What are the main parts of the circulatory system?
   A) Brain, lungs, nerves

   B) Heart, blood, and blood vessels

   C) Stomach, intestine, liver

   D) Bones, muscles, joints
   Answer: B) Heart, blood, and blood vessels
2. Why is the heart called a pump?
   A) It stores blood.

   B) It cleans the blood.

   C) It makes blood.

   D) It pushes blood to all parts of the body.
   Answer: D) It pushes blood to all parts of the body.
3. What useful materials does blood carry to body cells?
   A) Oxygen and nutrients

   B) Water and sweat

   C) Carbon dioxide and waste

   D) Saliva and enzymes
   Answer: A) Oxygen and nutrients

www.meebadi.in – Page 15

V. Answer the following questions in two or three sentences.

1. Name the main parts of the human circulatory system and write one function each.
   Heart: pumps blood. Blood: carries oxygen and nutrients and removes wastes. Blood vessels: transport blood throughout the body.
2. Why does heartbeat increase after exercise?
   During exercise, the body needs more oxygen and energy. The heart beats faster to pump more blood to the working muscles.
3. Why do we need the circulatory system?
   We need the circulatory system to transport oxygen and nutrients to body cells and remove wastes. It helps different parts of the body receive what they need.
4. Draw and label the human heart.
   Draw a simple heart diagram and label the main parts. The heart is the organ that pumps blood.
   HUMAN HEART DIAGRAM SPACE

www.meebadi.in – Page 16

VI. Answer the following questions in four or five sentences.

1. Explain the interdependency of the circulatory system and digestive system.
   The digestive system breaks food down and absorbs nutrients mainly in the small intestine. These nutrients enter the blood. The circulatory system carries the nutrients through the blood to body cells. In this way, the digestive and circulatory systems work together to supply the body with nutrients and energy.
2. Place your hand on your chest and feel your heartbeat. Which organ are you feeling, and what are its functions?
   You are feeling the heart. The heart acts like a pump and pushes blood to all parts of the body. Through circulation, blood carries oxygen and nutrients to cells and helps remove wastes.

www.meebadi.in – Page 17

WORKSHEET – 5

Concept: Excretory system & Nervous system

I. Rewrite the following words two times.

Word	Answer	Word	Answer	Word	Answer
Brain	Brain, Brain	Sweat glands	Sweat glands, Sweat glands	Kidneys	Kidneys, Kidneys
Abdomen	Abdomen, Abdomen	Eliminate	Eliminate, Eliminate	Waste material	Waste material, Waste material
Purification	Purification, Purification	Urine	Urine, Urine	Connection	Connection, Connection
Transmit	Transmit, Transmit

II. Fill in the blanks.

1. Removing the waste materials from our body is the duty of __________.
   Answer: excretory system
2. ____________ are the parts of our excretory system that filter blood.
   Answer: Kidneys
3. ____________ and ____________ are the excretory organs.
   Answer: Skin and kidneys

III. Read the following conversation and answer the given questions.

Body: So much waste is piled up in me daily.
Kidneys: I can eliminate most of the waste and water.
Body: How will you do it?
Kidneys: I will filter the waste from the blood I get.
Body: Very good! What about carbon dioxide?
Lungs: I am here to eliminate the waste gases.
Body: How will you do this?
Lungs: During exhalation, carbon dioxide will be sent out of the body.

Body: I am feeling hot! Hey skin, make me feel cooled down.
Skin: I am sending out the sweat. This will cool down the body.
Body: Very good! What else can you do?
Skin: Besides cooling the body, I also send out salts and some wastes.
Body: So, you are also sending out waste like the lungs along with your normal functioning.
Body: Now I am feeling clean, and now I will be healthy.

www.meebadi.in – Page 18

Questions

1. What is the main difference between the waste removed by the lungs and the waste removed by the kidneys?
   A) Lungs remove liquid waste; kidneys remove gas waste.

   B) Lungs remove solid waste; kidneys remove liquid waste.

   C) Lungs remove gas waste (CO₂); kidneys remove liquid waste.

   D) Both remove the exact same type of waste.
   Answer: C) Lungs remove gas waste (CO₂); kidneys remove liquid waste.
2. Why is it important for the waste to be thrown out of the body?
   A) To make the body heavier.

   B) To keep the body clean and healthy.

   C) To stop the body from sweating.

   D) To keep the carbon dioxide inside.
   Answer: B) To keep the body clean and healthy.
3. Both the skin and the kidneys help remove water from the body. How is the water removed by the skin different from the water removed by the kidneys?
   The skin removes water mainly as sweat, which also contains salts and some wastes and helps cool the body. The kidneys remove water with dissolved wastes as urine.

V. Multiple Choice Questions

1. Why do we sweat while playing?
   A) To look shiny

   B) To cool the body

   C) To store water

   D) To increase heat
   Answer: B) To cool the body
2. What may happen if waste is not removed from the body?
   A) The body becomes stronger

   B) The body stays cool

   C) The body becomes sick

   D) The body grows taller
   Answer: C) The body becomes sick
3. What is one main function of the nervous system?
   A) To digest food

   B) To help us think, feel, and respond to our surroundings

   C) To pump blood throughout the body

   D) To remove wastes from the body
   Answer: B) To help us think, feel, and respond to our surroundings

www.meebadi.in – Page 19

V. Answer the following questions in two or three sentences.

1. How do the lungs help remove waste from the body?
   The lungs remove waste gas from the body. During exhalation, carbon dioxide is sent out of the body.
2. Why is the brain called an important organ? Explain.
   The brain controls our actions and helps us think, feel and respond to our surroundings. It also helps coordinate many activities of the body.
3. Explain why all organ systems must work together.
   Different organ systems perform different but connected functions. For example, the digestive system supplies nutrients, the respiratory system supplies oxygen, and the circulatory system transports them to cells. Working together keeps the body alive, healthy and active.

www.meebadi.in – Page 20

VI. Answer the following questions in four or five sentences.

1. Describe the main parts of the human circulatory system and explain the function of each part.
   The main parts are the heart, blood and blood vessels. The heart acts like a pump and pushes blood throughout the body. Blood carries oxygen and nutrients to body cells and removes wastes. Blood vessels provide the network through which blood travels. Together these parts make circulation possible.
2. What may happen if one organ system does not work properly? Explain with one example.
   If one organ system does not work properly, other body functions can also be affected because the systems depend on one another. For example, if the respiratory system cannot supply enough oxygen, body cells may not get enough oxygen to release energy. This can make a person weak and affect normal activities.

www.meebadi.in – Page 21

ASSESSMENT

I. Multiple Choice Questions

1. Which of the following correctly defines an organ system?
   A) A group of bones joined together

   B) A group of organs working together to perform a common function

   C) A single organ doing many works

   D) Only the internal parts of the body
   Answer: B) A group of organs working together to perform a common function
2. Which organ system helps in transporting oxygen and nutrients to all parts of the body?
   A) Digestive system

   B) Nervous system

   C) Circulatory system

   D) Excretory system
   Answer: C) Circulatory system
3. Ravi ran fast for some time and started breathing heavily. Which organ system is mainly helping him get more oxygen at that time?
   A) Digestive system

   B) Respiratory system

   C) Skeletal system

   D) Excretory system
   Answer: B) Respiratory system
4. Meena ate food and later got energy to play. Which two organ systems worked together to help her get energy?
   A) Skeletal and nervous systems

   B) Digestive and respiratory systems

   C) Excretory and circulatory systems

   D) Nervous and skeletal systems
   Answer: B) Digestive and respiratory systems

www.meebadi.in – Page 22

II. Answer the following questions in two or three sentences.

1. Why are the skeletal system and muscles studied together when learning about body movement?
   Bones provide the framework of the body, while muscles work with bones and joints to produce movement. Therefore, they work together when the body moves.
2. The small intestine is long and coiled. How does this structure help in the digestion and absorption of nutrients?
   Its long and coiled structure provides more space and time for digested food to be processed. This helps in the proper absorption of nutrients.

III. Answer the following questions in four or five sentences.

1. During summer, your brother sweats a lot and becomes irritated while playing. How would you help him understand the importance and benefits of sweating?
   I would explain that sweating is a normal and useful function of the skin. Sweat helps cool the body when we become hot, especially while playing. It also removes some salts and wastes from the body. I would tell him to drink enough water, rest when needed and stay comfortable in hot weather. Sweating helps the body maintain a suitable temperature.

www.meebadi.in – Page 23

IV. Answer the following questions in five or six sentences.

1. Draw and explain the human digestive system.
   The digestive system begins at the mouth, where food is chewed and mixed with saliva. Food then passes through the oesophagus to the stomach. The stomach mixes and breaks down the food further. In the small intestine, nutrients are absorbed into the blood. The large intestine absorbs water and forms waste. The waste passes through the rectum and leaves the body through the anus.
   HUMAN DIGESTIVE SYSTEM DIAGRAM SPACE
   Labels: Mouth • Oesophagus • Stomach • Small intestine • Large intestine • Rectum • Anus
2. Our body is an amazing machine. How? Appreciate how different organ systems work together.
   Our body is like an amazing machine because many organ systems work together continuously. The digestive system provides nutrients from food, while the respiratory system provides oxygen. The circulatory system transports oxygen and nutrients to cells and carries wastes away. The excretory system removes wastes, and the nervous system helps control and coordinate activities. The skeletal system supports the body and helps movement. All these systems depend on one another to keep us alive, healthy and active.

www.meebadi.in
Class 5 EVS – 4. Our Body - Our Organ Systems – Workbook Solutions