Questions: Match each description to the correct type of immunity.

To match each description to the correct type of immunity, we need to understand the different types of immunity. The main types of immunity are:

1. Innate Immunity: This is the body's first line of defense and is non-specific. It includes physical barriers like skin, chemical barriers like stomach acid, and immune cells that attack any foreign invader.

2. Adaptive Immunity: This is specific and involves the body's ability to recognize and remember specific pathogens. It includes:

   • Humoral Immunity: Mediated by B cells and involves the production of antibodies.
   • Cell-mediated Immunity: Involves T cells that attack infected cells directly.

3. Passive Immunity: This is temporary immunity gained by receiving antibodies from another source, such as through breast milk or antibody injections.

4. Active Immunity: This is long-lasting immunity that develops after exposure to a pathogen or through vaccination.

Now, let's match descriptions to these types of immunity:

1. Description: "A newborn baby receives antibodies from its mother through breast milk."

   • Type of Immunity: Passive Immunity
   • Explanation: The baby is receiving antibodies directly from the mother, which provides temporary protection.

2. Description: "A person develops immunity after recovering from a viral infection."

   • Type of Immunity: Active Immunity
   • Explanation: The person's immune system has responded to the infection and developed memory cells for future protection.

3. Description: "The skin acts as a barrier to prevent pathogens from entering the body."

   • Type of Immunity: Innate Immunity
   • Explanation: The skin is a physical barrier and part of the body's non-specific first line of defense.

In summary, the descriptions are matched to the types of immunity as follows:

1. Passive Immunity
2. Active Immunity
3. Innate Immunity