Question

Africa Natural passive immunity develops in foetus by :

• A. Injecting antibodies
• B. Maternal antibodies that cross placenta
• C. Antibodies in colostrum
• D. (B) and (C)

Answer 1

The correct option is A Injecting antibodies

When ready-made antibodies are directly given to protect the body against foreign agents, it is called passive immunity. Colostrum, the yellowish fluid secreted by mother during the initial days of lactation has abundant antibodies(IgA) to protect the infant. The foetus also receives some antibodies from their mother, through the placenta during pregnancy.

So, the correct option is 'B and C'.