Select the correct statement about lymphocytes. a) b cells produce plasma cells, which secrete antibodies into the blood. b) the two main types are t cells and macrophages. c) t cells are the precursors of b cells. d) t cells are the only form of lymphocyte found in lymphoid tissue.

A) B cells produce plasma cells, which secrete antibodies into the blood

Explanation:

There are two types of lymphocytes present in blood. These are namely, B lymphocytes and T lymphocytes. The B lymphocytes are activated with help of T lymphocytes. The activated B cells divide and produce a large number of cells that differentiate into the plasma cells. These plasma cells finally produce antibodies against specific antigens.