Biology
Mention the following:
(i) Average life span of RBCs.
(ii) Range of RBCs per mm3 in a normal adult human female.
(iii) The two major categories of WBCs.
(iv) Blood cells involved in leukaemia.
Circulatory System
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Answer
(i) 120 days
(ii) 4.5 million
(iii) Granular & Non-granular
(iv) Leukocytes
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