A) naturally acquired active immunity
B) artificially acquired active immunity
C) naidrally acquired passive immunity
D) artificially acquired passive immunity
Correct Answer: C
Solution :
Maternal passive immunity is the type of a naturally acquired passive immunity that develops in the foetus after receiving antibodies from the mothers blood through placenta by the receptor present on the placental cells (which occurs around the third month of gestation). IgG is the only antibody isotype which can pass through the placenta. Apart from this passive immunity is also provided through the transfer of IgA antibodies found in the breast milk protecting foetus against bacterial infections until the newborn can synthesise its own antibodies.
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