Human Body Quiz For Grade 2

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Human Body Quiz For Grade 2 - Quiz

Most of us are aware of the fact that the human body is a huge topic that explains how our body functions. This subject is usually taught in second grade, where the student learns about bones, muscles, lungs, digestion, and senses. Let's see how much of this do you actually remember and understood. Take up this 'Human body quiz for Grade 2' and refresh your memory. Best of luck!


Questions and Answers
  • 1. 

    Which of these body parts are protected by bones? 

    • A.

      Skin

    • B.

      Heart

    • C.

      Lungs

    • D.

      Brain

    • E.

      Hair

    Correct Answer(s)
    B. Heart
    C. Lungs
    D. Brain
    Explanation
    The heart, lungs, and brain are protected by bones. The heart is protected by the rib cage, which surrounds it and provides a barrier against external forces. The lungs are also protected by the rib cage, as well as the sternum in the front. The brain is housed within the skull, which acts as a protective covering.

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  • 2. 

    Your heart and lungs keep you alive by working together. State true or false. 

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement is true because the heart and lungs are essential organs that work together to keep the body alive. The heart pumps oxygenated blood from the lungs to the rest of the body, providing oxygen and nutrients to the cells. The lungs, on the other hand, take in oxygen from the air and remove carbon dioxide, which is then exhaled. This exchange of gases is vital for the body's survival, making the statement true.

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  • 3. 

    How does the saliva in your mouth help in digestion?

    • A.

      It breaks down the food

    • B.

      It keeps the food soft

    • C.

      It pumps blood in our body

    • D.

      It allows our mouth to move

    Correct Answer
    A. It breaks down the food
    Explanation
    Saliva contains enzymes, such as amylase, that help break down carbohydrates in the food we eat. These enzymes start the process of digestion by breaking down complex molecules into smaller, more easily digestible ones. Additionally, saliva moistens the food, making it easier to swallow and allowing it to travel through the digestive system more smoothly. Therefore, the correct answer is that saliva breaks down the food.

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  • 4. 

    Why does your body digest food?

    • A.

      For energy

    • B.

      For sleep

    • C.

      For watching tv

    • D.

      For your hair

    Correct Answer
    A. For energy
    Explanation
    The body digests food in order to obtain energy. When we consume food, it is broken down into smaller molecules through the process of digestion. These smaller molecules are then absorbed into the bloodstream and transported to the cells where they are used for various functions, including providing energy. This energy is essential for carrying out daily activities, such as physical movement, maintaining body temperature, and powering the organs and systems within the body.

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  • 5. 

    Name the tube that connects our throat with the stomach. 

    • A.

      Muscle

    • B.

      Blood

    • C.

      Esophagus

    • D.

      Bone

    Correct Answer
    C. Esophagus
    Explanation
    The tube that connects our throat with the stomach is called the esophagus. It is a muscular tube that allows food and liquids to pass from the throat to the stomach for digestion. The esophagus plays a crucial role in the digestive system by transporting food through peristalsis, a series of muscle contractions, ensuring that it reaches the stomach for further processing.

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  • 6. 

    Which of these activities are required to keep our bones and muscles healthy? 

    • A.

      Eating bad food

    • B.

      Exercising

    • C.

      Oxygen

    • D.

      Eating healthy

    Correct Answer(s)
    B. Exercising
    D. Eating healthy
    Explanation
    Exercising and eating healthy are both activities that are required to keep our bones and muscles healthy. Regular exercise helps to strengthen our muscles and bones, improve flexibility, and maintain a healthy weight. It also promotes good blood circulation, which is important for delivering oxygen and nutrients to our muscles and bones. Eating a healthy diet that is rich in essential nutrients like calcium, vitamin D, and protein is also crucial for maintaining strong and healthy bones. Therefore, both exercising and eating healthy are necessary for the overall health and well-being of our bones and muscles.

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  • 7. 

    What do bones that fit together make?

    • A.

      Muscles

    • B.

      Skeleton

    • C.

      Lungs

    • D.

      Heart

    Correct Answer
    B. Skeleton
    Explanation
    Bones that fit together make a skeleton. The skeleton provides support, shape, and protection to the body. It also allows for movement and serves as an attachment point for muscles. Without a skeleton, the body would not have a framework to support its structure and function properly.

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  • 8. 

    What is the function of the lungs?

    • A.

      Take in air and move oxygen through your body

    • B.

      Digest your food

    • C.

      Create an optical illusion

    • D.

      Moves the bones

    Correct Answer
    A. Take in air and move oxygen through your body
    Explanation
    The lungs function by taking in air and moving oxygen through the body. They are responsible for the exchange of oxygen and carbon dioxide during the process of respiration. Oxygen is taken in through inhalation and then transported to the bloodstream, where it is delivered to various organs and tissues. Carbon dioxide, a waste product, is then removed from the body through exhalation. This process ensures that the body receives a constant supply of oxygen, which is essential for cellular respiration and overall bodily functions.

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  • 9. 

    Blood without oxygen is blue in color, but blood with oxygen is ______ in color. Complete this statement. 

    • A.

      White

    • B.

      Blue

    • C.

      Red

    • D.

      Orange

    Correct Answer
    C. Red
    Explanation
    When blood is deoxygenated, it appears blue because of the way light is absorbed and reflected by the blood vessels. However, when blood is oxygenated, it turns bright red. This is because oxygen binds to hemoglobin in the red blood cells, altering its molecular structure and causing it to reflect red light. Therefore, the correct answer is red.

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  • 10. 

    Which of these body organs makes our bones move?

    • A.

      Heart

    • B.

      Lungs

    • C.

       muscles

    • D.

      Blood

    Correct Answer
    C.  muscles
    Explanation
    Muscles are responsible for making our bones move. They are connected to our bones by tendons and when they contract, they pull on the bones, causing movement. Muscles work in pairs, with one muscle contracting while the other relaxes, allowing for smooth and coordinated movement. The heart, lungs, and blood do not directly contribute to bone movement.

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