7th Class Science Transportation in Animals and Plants Question Bank Transportation in Plants and Animals

  • question_answer The given bar chart shows the concentration of oxygen in blood samples from four places in the circulatory system of a man. Which sample was taken from the pulmonary artery?

    A)  P    

    B)  Q                   

    C)         R                    

    D)         S

    Correct Answer: A

    Solution :

                                    Pulmonary artery carries deoxygenated blood from the heart to the lungs. This means concentration of oxygen is less in the blood carried by pulmonary artery which is denoted by P.

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