We notice that, the answer for composition of blood is as below What is the % of Platelets in blood, if Plasma!+red cell+white cell constitute 100% rncomposition of blood is :-rnBlood plasma- 54 3% It contains proteins, amino acids, nitrogenous wastes, nutrients, gases, electrolytes rnRed Blood Cells-45%rnWhite Blood Cells- 0 7 %rnPlatelets

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Solution

The important components of blood are Plasma and blood cells. The plasma constitutes 54 - 55 % of total volume of blood and the blood cells (RBCs, WBCs, platelets) constitute 45% of the total volume of the blood. The count of blood cells may vary from person to person. Among these blood cells RBCs are most abundant and platelets constitute a tiny percentage of blood volume (0.17%). Thus actual range may vary i.e RBCs 43-44 %, WBcs 0.7-1 % and platelets 0.10- 0.3 %.

Also platelets are the fragments of the bone marrow cells and their life span is 9- 10 days, so their percentage keeps on changing.

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The component of blood which makes chemicals known as antibodies is :
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(c) red blood cells
(d) plasma

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