9. Which statement below correctly describes the affect of hormones in the male body? a. An increase in sperm production would be the result of lower amounts of FSH (follicle stimulating hormone) in the male body.
b. A decrease in LH (Luteinizing Hormone) would have no effect on the production of sperm cells.
c. Males do not require the production of FSH (follicle stimulating hormone).
d. None of the answers above are true.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

meiosis is the first to occur after the nuclei of opposite of opposite mating types fuse