Platelets | White blood cells(WBC) |
The platelets also called thrombocytes are some what round in shape and smallest in size. | The WBC also called leukocytes which are colourless and lack haemoglobin |
The platelets help in the clotting of blood which prevents excessive blood loss. | The main function of WBCs is to protect the body from disease-causing germs. i.e., provide immunity to the body. |