Question

Is antigen presentation essential for the activation and clonal selection of B cells, antigen-presenting cells, plasma cells, antibodies, or T cells?

Answer 1

See below.

Explanation:

See,the following image it depicts the necessity of antigen presenting by Antigen Presenting Cells,which is important for Helper T cell activation,which is playing the major role for activation of cytotoxic T cell as well as B cell by interleukins,a type of cytokine whose role is to execute molecular cross talking.

And only after activation B cells can form plasma cells to produce antibodies and Tc(cytotoxic) cells can produce enzymes like perforins,granzymes to destroy pathogens.