Class 5 G.K Questions - Human Body and Health

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Welcome to our collection of Class 5 G.K Olympiad previous year questions on the Human Body and Health chapter. This page features actual exam questions from previous years' G.K Olympiads like IGKO and SKGKO, giving you the opportunity to practice with real questions and get a sense of what to expect on the upcoming exam.

The Human Body and Health chapter is an important topic in the G.K Olympiad, and our collection of previous year questions covers a range of topics within this subject area, including the different body systems, organs and their functions, nutrition, health, and hygiene. By practicing these questions, you can improve your understanding of the concepts and build confidence in your knowledge, ultimately increasing your chances of success on the G.K Olympiad.

Whether you are preparing for the IGKO or SKGKO, or any other prominent G.K Olympiad, our collection of previous year questions on Human Body and Health for Class 5 students is an invaluable resource to help you prepare effectively. So start practicing today and take the first step towards achieving your G.K Olympiad goals.


Which part of the ear makes hearing possible?

a) Outer ear

b) Middle ear

c) Inner ear

d) None of these

Answer: c) Inner ear

Explanation: The inner ear contains the cochlea, which is responsible for hearing. When sound waves travel through the ear canal and vibrate the eardrum, the middle ear bones transmit these vibrations to the inner ear, where they are transformed into nerve impulses that are sent to the brain and perceived as sound.

Which of these is NOT a function of the liver?

a) Breaks down and builds up many biological molecules

b) Stores vitamins and iron

c) Destroys old blood cells

d) Stores and concentrates bile

Answer: d) Stores and concentrates bile

Explanation: The liver performs a wide range of functions in the body, including breaking down and building up many biological molecules, storing vitamins and iron, and destroying old blood cells. However, the gallbladder, not the liver, is responsible for storing and concentrating bile.

In which organ is the digestion of food completed?

a) Anus

b) Large intestine

c) Small intestine

d) Minerals

Answer: c) Small intestine

Explanation: The small intestine is where the majority of the digestion and absorption of nutrients from food takes place. The large intestine, on the other hand, primarily absorbs water and electrolytes from the remaining material and forms and stores feces until they are eliminated through the anus.

__________ are building blocks.

a) Carbohydrates

b) Proteins

c) Vitamins

d) Minerals

Answer: b) Proteins

Explanation: Proteins are considered the building blocks of the body as they are essential for the growth and repair of tissues. Carbohydrates and fats provide energy, while vitamins and minerals are required for various bodily functions.

In which part of the digestive system is a large amount of water absorbed?

a) Small intestine

b) Oesophagus

c) Large intestine

d) Anus

Answer: c) Large intestine

Explanation: The large intestine, also known as the colon, is the final section of the digestive system. The large intestine absorbs water from the remaining indigestible food matter and passes the waste material out of the body through the anus.

Around how much skin cells are lost every year?

a) 1 kg

b) 4 kg

c) 10 kg

d) 25 kg

Answer: b) 4 kg

Explanation: According to scientific estimates, an average adult sheds around 30,000 to 40,000 skin cells every hour, which amounts to approximately 1 million skin cells per day. This translates to about 4 kg of skin cells lost per year for an adult. However, the exact amount of skin cells shed varies based on factors such as age, skin health, and environmental factors.

What part of body weight is constituted by the blood?

a) 2%

b) 8%

c) 13%

d) 33%

Answer: b) 8%

Explanation: The blood in the human body makes up around 7-8% of body weight, with an average adult having approximately 4.5 to 5.5 liters of blood.

How many bones are there in a child?

a) 206

b) 300

c) 450

d) 625

Answer: b) 300

Explanation: An adult human body has 206 bones. The number of bones in a child fuse together as the child grows and develops, leading to a reduction in the number of bones.

What nourishes and lubricates the surface of the eye and washes away debris?

a) Tears

b) Mucus

c) Saliva

d) Enzymes

Answer: a) Tears

Explanation: Tears are produced by the lacrimal gland and help to nourish and lubricate the surface of the eye, wash away debris, and prevent infections.

Which is the fastest healing part of the human body?

a) Teeth

b) Tongue

c) Ear

d) Nose

Answer: d) Nose

Explanation: The nose is considered the fastest healing part of the body due to its rich blood supply and the presence of epithelial cells that can quickly regenerate. The average healing time for a broken nose is about 3-5 days.

Deficiency of Vitamin A causes __________.

a) Spots

b) Acne

c) Night blindness

d) All of these

Answer: c) Night blindness

Explanation: Vitamin A is important for maintaining healthy eyesight, and a deficiency of this vitamin can lead to a condition called night blindness, in which a person has difficulty seeing in low light conditions. Vitamin A deficiency can also cause other symptoms such as dry skin, spots, and acne.

Which vitamin plays an important role in protecting red blood cells?

a) A

b) C

c) E

d) K

Answer: c) E

Explanation: Vitamin E is a powerful antioxidant that helps protect the red blood cells from damage caused by free radicals, which are highly reactive molecules that can harm the body's cells and tissues. Vitamin E is also important for maintaining healthy skin and eyes, and for boosting the immune system.

What helps in regulating body temperature?

a) Heart

b) Brain

c) Skin

d) Liver

Answer: c) Skin

Explanation: The skin helps to regulate body temperature through the process of sweating. When the body temperature rises, sweat glands in the skin secrete sweat, which evaporates and cools the body down. When the body temperature drops, the sweat glands reduce their activity, and the skin retains heat.

Which of these is NOT a part of the domestic first-aid box?

a) Adhesive tape

b) Syringe

c) Scissors

d) Bandage

Answer: b) Syringe

Explanation: A domestic first-aid box typically contains items such as adhesive tape, scissors, and bandages. However, a syringe is not typically included in a domestic first-aid box.

Read the given statements and choose the correct option.

Statement A: We should walk on the road in a zig-zag manner.

Statement B: We must cross the roads at zebra crossings.

a) Statement A is true

b) Statement B is true

c) Both Statements A and B are true

d) Both Statements A and B are false

Answer: b) Statement B is true

Explanation: We should always cross the road at designated pedestrian crossings, such as zebra crossings, to ensure our safety. However, walking on the road in a zig-zag manner is not a safe practice and is not recommended.

Read the question and match by choosing the correct option.

Column I Column II

1. Calcium (i) Transports oxygen to RBCs

2. Iron (ii) Builds bones and teeth

3. Zinc (iii) Lowers blood pressure

4. Magnesium (iv) Promotes muscle movement

a) 1-(iv), 2-(i), 3-(iii), 4-(ii)

b) 1-(i), 2-(iii), 3-(iv), 4-(ii)

c) 1-(i), 2-(iv), 3-(iii), 4-(ii)

d) 1-(iii), 2-(ii), 3-(i), 4-(iv)

Answer: b) 1-(i), 2-(iii), 3-(iv), 4-(ii)

Explanation: Calcium is required for the transportation of oxygen to red blood cells, iron is needed for building bones and teeth, zinc helps to lower blood pressure, and magnesium promotes muscle movement.

Circulation of blood was discovered by ________.

a) Robert Hook

b) William Harvey

c) Lord Wellington

d) Prince Charles II

Answer: b) William Harvey

Explanation: William Harvey was an English physician who first described the circulation of blood in the human body in the 17th century.

At the time of hearing, sound waves are converted into ________.

a) nerve impulses

b) taste buds

c) vision signals

d) enzymes

Answer: a) nerve impulses

Explanation: When sound waves enter the ear, they are collected by the outer ear and channeled into the ear canal, where they strike the eardrum and make it vibrate. These vibrations are then transmitted to the inner ear, where they are converted into electrical signals or nerve impulses that the brain can interpret as sound.

Where does the digestion of food start in the human body?

a) Mouth

b) Stomach

c) Liver

d) Small intestine

Answer: a) Mouth

Explanation: Digestion of food starts in the mouth, where the process of breaking down food into smaller molecules begins with the help of enzymes in saliva. The food is then chewed and mixed with saliva to form a soft mass called a bolus, which is then swallowed and travels down the esophagus to the stomach.

A __________ disease can be transmitted from animals to humans.

a) Faunotic

b) Herbotic

c) Zoonotic

d) Robotic

Answer: c) Zoonotic

Explanation: A zoonotic disease is a disease that can be transmitted from animals to humans. These diseases can be caused by viruses, bacteria, parasites, and fungi, and can range from mild to severe. Examples of zoonotic diseases include rabies, Lyme disease, and avian influenza.

Which of these are released by the pancreas?

a) Bicarbonates

b) Trypsin

c) Chymotrypsin

d) All of these

Answer: d) All of these

Explanation: The pancreas is a gland located in the abdomen that secretes digestive enzymes and bicarbonate into the small intestine to help break down and absorb nutrients from food. Trypsin and chymotrypsin are two examples of digestive enzymes released by the pancreas, while bicarbonates are released to neutralize stomach acid in the small intestine.

Bones in our body meet at.

a) joints

b) tendons

c) ribcage

d) muscles

Answer: a) joints

Explanation: The bones in our body meet at joints, which are responsible for allowing movement and flexibility in the body. There are several different types of joints in the human body, including hinge joints, ball-and-socket joints, and pivot joints, among others.

Which of the following statements is INCORRECT?

a) The Sebum glands produce sebum which prevents our skin from getting too dry.

b) The Adrenal gland is located just above the heart.

c) Vitamin A is needed for good eyesight.

d) Vitamin D is produced in the body when skin is exposed to sunlight.

Answer: b) The Adrenal gland is located just above the heart.

Explanation: The Adrenal gland is located above the kidney. The Sebum glands produce sebum which prevents our skin from getting too dry, Vitamin A is needed for good eyesight, and Vitamin D is produced in the body when skin is exposed to sunlight.

A disease of human immune system caused by the human immune deficiency virus is ______________.

a) HIV


c) Constipation

d) Fever 4.

Answer: b) AIDS

Explanation: AIDS is a disease of human immune system caused by the human immune deficiency virus (HIV).

Why does the vomit taste sour? It is because ______________.

a) you have eaten sour food.

b) the stomach is full of acid.

c) vomit contains toxins.

d) none of these.

Answer: b) the stomach is full of acid.

Explanation: Vomit tastes sour because the stomach is full of acid, which is released when the stomach muscles contract and push the contents of the stomach up into the esophagus and out of the mouth.

Which Vitamin supports the metabolisation of carbohydrates in the body?

a) B1

b) B2

c) B3

d) B12

Answer: a) B1

Explanation: Vitamin B1, also known as thiamine, is involved in the metabolism of carbohydrates in the body. It helps to convert carbohydrates into glucose, which the body uses for energy. It also plays a role in the functioning of the nervous system.

Vitamin ______ is also called riboflavin.

a) B1

b) B2

c) B3

d) B12

Answer: b) B2

Explanation: Vitamin B2 is also known as riboflavin. It is involved in many important functions in the body, including energy production, the metabolism of fats and amino acids, and the maintenance of healthy skin and eyes.

Kiwi fruit is a rich source of ______.

a) Carbohydrates

b) Iron

c) Vitamin C

d) Proteins

Answer: c) Vitamin C

Explanation: Kiwi fruit is a rich source of vitamin C, which is an important antioxidant that helps to protect cells from damage caused by free radicals. Vitamin C also plays a role in the production of collagen, which is a protein that helps to support healthy skin, cartilage, and bones.

What is the deficiency disease of iron?

a) Scurvy

b) Night blindness

c) Rickets

d) Anaemia

Answer: d) Anaemia

Explanation: Iron deficiency can lead to anaemia, which is a condition in which there are not enough red blood cells in the body or the red blood cells do not contain enough haemoglobin, which is a protein that carries oxygen to the body's tissues. Symptoms of anaemia can include fatigue, weakness, shortness of breath, and dizziness.

The major types of cells in our blood are _____________ in number.

a) two

b) three

c) four

d) five

Answer: c) four

Explanation: There are four major types of cells in our blood - red blood cells, white blood cells, platelets, and plasma. These cells perform various functions such as carrying oxygen, fighting infections, clotting blood, and transporting nutrients, hormones, and waste products.

Which of the following is not responsible for spreading of diseases?

a) Light

b) Air

c) Water

d) Insects

Answer: a) Light

Explanation: Light is not responsible for the spread of diseases. The main modes of disease transmission are through contact with infected individuals, airborne droplets, contaminated food and water, and insect bites.

Proteins are responsible for the growth of the body. Deficiency of this nutrient causes:

a) Kwashiorkor

b) Rickets

c) Nausea

d) None of these

Answer: d) None of these

Explanation: While proteins are important for growth, a deficiency of this nutrient can cause a variety of health problems such as stunted growth, weakened immunity, and muscle wasting. Kwashiorkor is a type of severe protein malnutrition that can occur in children, while rickets is a bone disorder caused by a deficiency of vitamin D.

The tissue in the human body that does not have any blood vessel is _________.

a) nails

b) hair

c) both (a) and (b)

d) none of these

Answer: c) both (a) and (b)

Explanation: Nails and hair are both composed of dead cells and do not have any blood vessels.

Which system is formed by the organs like eyes, ears, nose, tongue, and skin?

a) Nervous system

b) Respiratory system

c) Sensory system

d) Excretory system

Answer: c) Sensory system

Explanation: The sensory system consists of the organs that receive sensory information from the environment and send it to the brain for processing, including the eyes, ears, nose, tongue, and skin.

Approximately how many muscles are there in the human body?

a) 100

b) 450

c) 650

d) 990

Answer: b) 450

Explanation: The human body contains approximately 650 muscles, but some of these are considered part of the same muscle group. Therefore, the total number of individual muscles is around 450.

What is the hard bony structure of the body called?

a) Nerve

b) Muscle

c) Heart

d) Skeleton

Answer: d) Skeleton

Explanation: The skeleton is the framework of bones that supports the body and protects its internal organs.

How many parts is the ear divided into?

a) Three

b) Five

c) Eight

d) Ten

Answer: a) Three

Explanation: The ear is divided into three parts: the outer ear, middle ear, and inner ear.

Which of these organs has no bones?

a) Nose

b) Tongue

c) Forehead

d) Fingers

Answer: b) Tongue

Explanation: The tongue is a muscular organ that helps us taste and swallow food, but it does not contain any bones.

Which is the largest organ of the human body?

a) Skin

b) Stomach

c) Heart

d) Brain

Answer: a) Skin

Explanation: The skin is the largest organ of the human body, and it covers the entire body surface. It is an essential part of the body's immune system and serves to protect the body from external threats such as harmful bacteria, viruses, and other pathogens.

Which of these organs stores and concentrates bile?

a) Stomach

b) Liver

c) Pancreas

d) Gall bladder

Answer: d) Gall bladder

Explanation: The gallbladder is a small, pear-shaped organ located under the liver that stores and concentrates bile, which is produced by the liver. Bile helps with the digestion and absorption of fats in the small intestine.

__________ is the opening for elimination of faeces.

a) Rectum

b) Small intestine

c) Anus

d) Pancreas

Answer: c) Anus

Explanation: The anus is the opening at the end of the digestive tract through which feces are eliminated from the body. The rectum is the final section of the large intestine, where feces are stored before elimination.

Which of these nutrients are the primary source of energy?

a) Carbohydrates

b) Proteins

c) Vitamins

d) Minerals

Answer: a) Carbohydrates

Explanation: Carbohydrates are the primary source of energy for the body. They are broken down into glucose, which is used by the body for energy. Proteins and fats can also be used for energy, but carbohydrates are the body's preferred source.

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