Multiple choice

immunity passed to the fetus via the placenta is known as

  1. active

  2. passive

  3. primary

  4. inactive

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Passive immunity occurs when antibodies are transferred from one individual to another, such as from mother to fetus across the placenta. Active immunity requires the individual to produce their own antibodies through exposure to an antigen.