Question

1) WBC play an important role in the body's immune system. Justify.

Answer 1

wbc 's are of 5 types. they are monocyte lymphocytes neutrophils Eosinophil and basophils. they play an important role in the body's immune system by attacking the germs that invade our
body and thus they protect our body.

I hope it helps u.

Answer 2

WBCs i.e White blood cells commonly called as leukocytes it is the cell that is present in our immune system which protects our body against germs or other infectious diseases.
Their types are :-
 < Neutrophils 
 < Basophils
 < Eosinophils.
 < Lymphocytes.
 < Monocytes. 
 < Macrophage.