Single correct option
Consider the following statements about human blood.
1. Mature red blood cells of mammals do not have a nucleus.
2. White blood cells carry oxygen to the tissues.
Which of the statements given above is/are correct?
1. Mature red blood cells of mammals do not have a nucleus.
2. White blood cells carry oxygen to the tissues.
Which of the statements given above is/are correct?
- A. 1 only
- B. 2 only
- C. Both 1 and 2
- D. Neither 1 nor 2
Show answer and solution
Answer: (A) 1 only
Mature mammalian red blood cells lose their nucleus, giving more space for haemoglobin, so statement 1 is correct. Oxygen is carried by haemoglobin in red cells, whereas white blood cells defend the body against infection, so statement 2 is wrong.
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