While learning to ride a bicycle Raju lost his balance and
fell. He got bruises on his knees and it started bleeding.
However, the bleeding stopped after some time.
(a) Why did the bleeding stop?
(b) Why blood is red in colour?
(c) Which type of blood cells are responsible for clotting of
blood?
(d) Expand WBC and RBC.
(e) Blood in human body is
(1)Afluid only
(2) A solid
(3) A liquid
(4) none of the above
Answers
Answer:
The answer is mentioned below, hope it helps:-
Explanation:
a) The bleeding stopped because the White Blood Cell (WBC) close the opening by forming a clot on the torn tissue.
b) The blood looks red because of the huge amount of Red Blood Cell (RBC) present in the blood.
c) The White Blood Cell (WBC) are responsible for clotting of blood.
d) WBC - White Blood Cell
RBC - Red Blood Cell
e) (1) A fluid only
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Answer:
b) blood is red because of hemoglobin
c) platelets are responsible for blood clotting
d) RBC - A type of blood cell which contain a red pigment called hemoglobin also known as red blood cells
WBC- ita a type of blood cell which fights against germs that may enter our body ,it is also known as white blood cells. this type of blood cell makes our immune system.
e) a liquid
a) platelets immediately sticks to the edges of the cut and releases chemicals that attract more platelets . eventually the platelets plug is formed and the outside bleeding stops
Explanation:
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