alleryStart learning →Ravi feels a steady beat in his chest. Which organ pumps his blood around the body?
- Heart
- Liver
- Stomach
- Kidney
Show answer and solution
Correct answer: A. Heart
The heart is the organ that pumps blood to all parts of the body.
Olympiad (Class 4) Our body and health — practice questions
Explore 49 free Our body and health questions in Olympiad (Class 4) General Knowledge. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 1–30 of 49.
Ravi feels a steady beat in his chest. Which organ pumps his blood around the body?Read the answer and worked solution →Which part of the body mixes food with strong acids to break it down?Read the answer and worked solution →Meena chews a piece of bread. Where does digestion of food begin?Read the answer and worked solution →After the stomach, which part takes in nutrients and water from food?Read the answer and worked solution →Which part of the body dries leftover food waste into solid stool?Read the answer and worked solution →Which pair of organs cleans waste from the blood to make urine?Read the answer and worked solution →Which gas does blood pick up in the lungs for the body to use?Read the answer and worked solution →Which organ is the organ of thought, memory and feeling?Read the answer and worked solution →Which body part covers the outside and protects the organs inside?Read the answer and worked solution →Tina wants to bend her arm and walk. Which system gives the body its shape and movement?Read the answer and worked solution →Where inside the larger bones are blood cells made?Read the answer and worked solution →Strong bones store a mineral that is also found in milk. Which one is it?Read the answer and worked solution →Sam counts the arms and legs of 3 children. How many limbs does each human body have?Read the answer and worked solution →Which bony column at the back protects the spinal cord?Read the answer and worked solution →Which set of body parts gathers news about the world around us?Read the answer and worked solution →Which of these happens without you deciding to do it?Read the answer and worked solution →What is the name of the largest artery that carries blood to the body?Read the answer and worked solution →Veins carry blood back to the heart. What is true about that blood?Read the answer and worked solution →Blood goes to the lungs from the heart. What does it take in there?Read the answer and worked solution →When the diaphragm moves down, what happens to the air?Read the answer and worked solution →What are the tiny air sacs in the lungs called?Read the answer and worked solution →Two children each have 2 kidneys. How many kidneys do they have in all?Read the answer and worked solution →Which organ is like a hollow balloon that holds urine until you go to the toilet?Read the answer and worked solution →The heart has 2 atria and 2 ventricles. How many chambers does it have?Read the answer and worked solution →Where in the chest is the heart found?Read the answer and worked solution →Which small organ stores bile that helps the body digest fats?Read the answer and worked solution →Which organs sit together in the belly area (abdomen)?Read the answer and worked solution →Which habit raises the chance of heart disease?Read the answer and worked solution →Which habit can damage the air sacs of the lungs over many years?Read the answer and worked solution →Which part of the body fights germs by finding and destroying outside invaders?Read the answer and worked solution →
Worked practice questions
Which part of the body mixes food with strong acids to break it down?
- Mouth
- Stomach
- Heart
- Lungs
Show answer and solution
Correct answer: B. Stomach
Food is churned with gastric acids in the stomach, which breaks it down further.
Meena chews a piece of bread. Where does digestion of food begin?
- Stomach
- Kidneys
- Mouth
- Rectum
Show answer and solution
Correct answer: C. Mouth
Chewing in the mouth breaks food into small pieces, so digestion starts there.
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