Question

1. which type of immunity is present in a fetus because it receives antibodies from the mothers blood via the placenta? a naturally acquired active immunity. b naturally acquired passive immunity. c artificially acquired passive immunity. d artificially acquired active immunity. check it

Explanation:

• Naturally acquired active immunity: Occurs when the body is exposed to a pathogen naturally (e.g., through infection) and mounts its own immune response (produces its own antibodies). This is not the case here as the fetus is receiving antibodies, not producing them on its own due to natural pathogen exposure.
• Naturally acquired passive immunity: Involves the transfer of antibodies from one individual to another in a natural way. In the case of a fetus, antibodies (especially IgG) are transferred from the mother's blood via the placenta. This provides temporary immunity to the fetus.
• Artificially acquired passive immunity: Happens when antibodies (e.g., in the form of immune globulin injections) are given to an individual artificially (not through a natural biological transfer like mother - fetus).
• Artificially acquired active immunity: Results from vaccination (artificial exposure to a pathogen or its components) which stimulates the body to produce its own antibodies.

Answer:

B. Naturally acquired passive immunity.