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  3. 10th Class
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10th Class Science Sample Paper Sample Paper - 1 Term - 1

  • question_answer
    Due to injury, flow of blood from vessels reduces the efficiency of pumping system. How is the leakage prevented?  

    Answer:

    Blood contains blood platelets. In the region of injury, the platelets burst. It helps in coagulation of blood and seal the place of leakage or injury.                                                                 (2)  


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