A) RBCs
B) WBCs
C) Plasma
D) Placenta
Correct Answer: D
Solution :
Blood is composed of blood cells suspended in blood plasma. Plasma constitutes 55% of blood fluid. The blood cells are mainly red blood cells (RBCs) and white blood cells, including leukocytes and platelets. The most abundant cells in vertebrate blood are red blood cells.You need to login to perform this action.
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