Assertion (A): Transplantation of organs to save certain patients often fails.
Reason(R): Blood vascular system and blood groups are responsible for such failures.
Correct answer: (b) Both assertion(A) and reason(R) are true, but reason(R) is not the correct explanation for assertion.
∙ Transplantation of organs is done to save the patient in case of an organ failure.
∙ For transplantation, blood typing and tissue typing are very necessary.
∙ Our body cells can differentiate between its own cells and other cells.
∙ Mismatched organs, or organs that are not matched closely enough, may trigger a transplant rejection by the lymphocytes.
∙ So, both assertion and reason are correct, but reason is not the correct explanation for the assertion.