Q. Consider the following differences between RBCs and WBCs:
  1. While RBCs do not have nucleus, WBCs have nucleus in them
  2. Life span of RBCs is higher than that of WBCs
  Which of the above statements is/are correct?

Answer: Both 1 & 2
Notes: Both are correct statements
There is only one type of RBC found in the blood whereas there are many types of WBCs found in the blood. RBCs are produced in the red bone marrow; WBCs are produced in the lymph nodes.