Which of the following statements is/are incorrect for platelets found in blood?

Platelets are non-nucleated in human just like RBC

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They are formed from the megakaryocyte cells of bone marrow

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Thromboplastin secreted by platelet helps in blood clotting

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None of the above

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Solution

The correct option is D None of the above
Platelets also called thrombocytes, are cell fragments produced from megakaryocytes (special cells in the bone marrow). Platelets are non-nucleated in human just like RBC. Thromboplastin is secreted by the platelets that catalyse the reaction which converts prothrombin into thrombin which is an important step in the blood coagulation process.

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