67. Important component that helps in clotting of the blood is called ________ . A.Haemoglobin B.Platelets C.Serum D.Plasma
Answer: Option B Solution: The main job of platelets, or thrombocytes, is blood clotting. Platelets are much smaller in size than the other blood cells. They group together to form clumps, or a plug, in the hole of a vessel to stop bleeding.
