Which of the following provides nutrition to sperm?

The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is

Which of the following statement is wrong as regards to man

Aldosterone is secreted by

$A$ : The most immediate effect of $FSH$ is the maturation of existing late primary or secondary follicle.
$R$ : $A$ rising level of $FSH$ causes the developing egg within the follicle to complete the first meiotic division to form a secondary oocyte.