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Q7    What gives red blood cells their colour?
                       (a) Muscle
                       (b) Oxygen
                       (c) Haemoglobin
                       (d) Plasma

                 Q8    What is the correct name for red blood cells?
                       (a) Erythrocytes
                       (b) Leucocytes
                       (c) Phagocytes
                       (d) Megabytes

                 Q9    How much % of water is present in blood?
                       (a) 60
                       (b) 70
                       (c) 80
                       (d) 90

                 Q10  ______ forms clots when blood vessels get damaged.
                       (a) Platelets
                       (b) Cellulose
                       (c) Haemoglobin
                       (d) None of the above.



               SUBJECTIVE
                                                                                                 Mark      Leve
                                                                                                 s         l
                 Q1.  What are the functions of white blood cells present in the blood?                                                                                                                                                                                                                                                              1   E


                 Q2.  What are the functions of platelets present in the blood?                                                                                                                                                                                                                                                              1   E


                 Q3.   What is blood? What are the functions of blood in the body?
                                                                                                 3

                                                                                                           Av

                 Q4.  (a) Explain the composition of blood.                                      5         Av
                       (b) What makes the blood appear red?

                 Q5.  (a) Name the pigment present in RBCs. Write its role.                      3         D
                       (b) Draw neat diagrams of RBCs, WBCs, and Platelets.

                 Q6.  What will happen if there is a deficiency of haemoglobin in the            1         D
                       blood?
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