7th Class Science Transportation in Animals and Plants Question Bank Self Test-8

  • question_answer
    Blood performs many functions in our body. Codi has studied that the loss of large amount of blood may cause death. He tried to estimate about the affected activities in the body due to loss of use amount of blood. Choose the one which is not true?

    A)  Loss of greater amount of blood means loss of a number of hemoglobin. Hemoglobin is the carrier of oxygen. Therefore, capacity of carrying oxygen of the blood might have reduced in the body which has ultimately led to death

    B)  Work of transportation is carried by blood. Less amount of blood led disturbance in the transportation work, which causes accumulation of waste substances inside the body and lack of oxygen and food for the cells

    C)  Blood contains WBC. WBC fights against pathogens. Therefore, improper amount of blood means weakening of defense system of the body.

    D)  Volume of the blood vessels is reduced in order to maintain the pressure and flow of the blood

    E)  None of these

    Correct Answer: D

    Solution :


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