Question

Match the following :

	Set I		Set II
A	Natural active immunity	I	Developes due to vaccination
B	Natural passive immunity	II	Anti-rabies serum
C	Artificial active immunity	III	Aqcuired after smallpox infection
D	Artificial passive immunity	IV	Transfered from mother to child

• A. A- VI, B- III, C- I, D- II
• B. A- II, B- IV, C- III, D- I
• C. A- III, B- IV, C- I, D- II
• D. A- II, B- III, C- IV, D- I

Answer 1

The correct option is C A- III, B- IV, C- I, D- II

Natural active immunity results, when exposure to a diseased organism triggers the immune system to produce antibodies to that disease. When B cells and T cells are activated by a pathogen, memory B-cells and T-cells develops and the primary immune response results.

Natural passive immunity may be provided by colostrum, the first secretion of the mammary glands, antibodies that are transferred from mother placenta to fetus colostrum contains immune cells (as lymphocytes) and many antibodies such as IgA, IgG and IgM. The baby absorbs the antibodies through its gut.

Artificially acquired active immunity can be induced by a vaccine.

Artificially acquired passive immunity is a short-term immunization by the injection of antibodies.

Thus the correct answer is option C.