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3rd Class Science Our Body Question Bank Human Body

  • question_answer
    Substances abundant in the dull, purplish red blood in the veins are _____.
    (a) Nutrients
    (b) Oxygen
    (c) Carbon dioxide
    (d) Waste materials
     

    A) (a) and (b) only           

    B) (b) and (d) only                      

    C) (a) and (c) only      

    D) (c) and (d) only

    Correct Answer: D

    Solution :

    Circulatory system consists of blood vessels and heart. Blood vessels are of two types - arteries and veins. Arteries carry blood rich in nutrients and oxygen to all body parts while veins collect blood rich in carbon dioxide and waste materials from the body parts and carry it back to the heart.                                  


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