Question

the text describes the schistosoma worm as a macroscopic parasite and also mentions microscopic viruses as pathogens. how would the adaptive immune systems initial recognition of these two very different pathogens be fundamentally similar?

both would be immediately destroyed by the same non - specific phagocytic cells.

both would be trapped and destroyed exclusively within the spleen before an immune response could begin.

neither would be recognized, as the adaptive system can only respond to bacteria.

the immune system would recognize specific non - self antigens on the surface of both the worm and the virus.

Explanation:

The adaptive immune system recognizes pathogens by detecting non - self antigens on their surfaces. Phagocytic cells are part of the innate immune system, not the adaptive one. Trapping and destruction exclusively in the spleen is incorrect as immune responses occur in multiple locations. The adaptive system responds to many pathogens, not just bacteria.

Answer:

The immune system would recognize specific non - self antigens on the surface of both the worm and the virus.