What is the difference between a food web and a food chain?
A. Food webs only show movement of energy
through spiders within an ecosystem.
B. Food chains show linear movement where
food webs show multiple pathways.
C. Food chains show the beginning of energy
flow where food webs show the end of energy
flow.

B. Food chains show linear movement where food webs show multiple pathways.

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.