Biology
Reema was cutting vegetables in the kitchen while talking on the phone. Distracted, she accidentally cut her finger. However, she noticed that the bleeding did not stop quickly and she had to be rushed to a nearby doctor's clinic. The doctor explained that this could happen due to several conditions which interfere with the process of blood clotting.
(a) Name one mineral element that is essential for blood clotting.
(b) Which of the following is not a cause of delayed blood clotting ?
(i) Low platelet count
(ii) Deficiency of vitamin K
(iii) Haemophilia
(iv) Having Rh negative blood group
(c) Which blood cells are directly involved in blood clotting and what is their role?
Circulatory System
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Answer
(a) One mineral element that is essential for blood clotting is calcium.
(b) Having Rh negative blood group
Reason — Blood group does not affect blood clotting.
(c) Platelets are directly involved in blood clotting. They help initiate the clotting process by releasing thrombokinase, which finally lead to the formation of fibrin and help stop bleeding.
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