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The circulatory system — Biology STD 10 — Question

ICSE BoardEnglish MediumSTD 10BiologyThe circulatory system1 Mark
MCQ
Pick the odd one out.
  • A
    Erythrocytes - Haemoglobin
  • B
    Leucocytes - Defence
  • ✓
    Blood platelets - Oxygen transport
  • D
    Haemoglobin - Iron and protein
✓

Answer

Correct option: C.
Blood platelets - Oxygen transport
(c) Blood platelets - Oxygen transport
Explanation:
Erythrocytes are cellular components containing haemoglobin for transport of respiratory gases. Haemoglobin comprises iron part haem and protein part globin.
Leucocytes are white blood cells involved in defence.
Blood platelets or thrombocytes are nucleated structures involved in blood coagulation.

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