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WAEC Biology 2003 Question 14

Question 14

Transport in Animals

Which of the following constitutes the cellular components of the mammalian blood?
I. Haemoglobin
II. Erythrocytes
III. Leucocytes
IV. Platelets

  1. A.I, II and III only
  2. B.I, III and IV only
  3. C.II, III and IV only
  4. D.I, II, III and IV
Show the answer and explanation

Answer: C (II, III and IV only)

Explanation

The cells (and cell fragments) of blood are red cells (erythrocytes), white cells (leucocytes) and platelets. Haemoglobin is a pigment inside red cells, not a cell.