Question

Match the types of immunity listed in column I with the examples listed in column II. Choose the answer that gives the correct combination of alphabets of the two columns.

	Column I		Column II
A.	Natural active	1.	Immunity developed by heredity
B.	Artificial passive	2.	From mother to foetus through placents
C.	Artificial active	3.	Injection of antiserum to travellers
D.	Natural passive	4.	Fighting infections naturally
		5.	Induced by vaccination

• A. A - 1, B - 2, C - 3, D - 5
• B. A - 4, B - 3, C - 5, D - 2
• C. A - 4, B - 5, C - 2, D - 3
• D. A - 5, B - 4, C - 3, D - 1

Answer 1

The correct option is B A - 4, B - 3, C - 5, D - 2

Naturally acquired active immunity occurs when the person is exposed to a live pathogen, develops the disease, and becomes immune as a result of the primary immune response. Artificially acquired active immunity can be induced by a vaccine, a substance that contains the antigen. Naturally acquired passive immunity occurs during pregnancy, in which certain antibodies are passed from the maternal blood into the fetal bloodstream in the form of IgG. Artificially acquired passive immunity is a short-term immunization by the injection of antibodies, such as gamma globulin, that are not produced by the recipient's cells.

So, the correct answer is 'A - 4, B - 3, C - 5, D - 2'