Which of the following lymphoid organs is NOT matched with its function? bone marrow: a) form lymphocytes Peyer's patches: b) site of B cell maturation thymus: c) site of T cell maturation spleen: d) remove old red blood cells

Peyer's patches: b) site of B cell maturation

Explanation:

B lymphocytes are produced in the bone marrow and get mature in the bone marrow only so the site of B cell maturation is bone marrow, not Peyer's patches. B cells produce antibodies that help in destroying microbes.

Peyer's patches are lymphatic tissue mass which is found especially in the mucosa and submucosa of the ileum. This lymphoid organ has a large number of B lymphocytes which monitors the intestinal bacteria and prevents the growth of pathogenic bacteria in the intestine.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.