Given a diagram showing a portion of a seminiferous tubule. Identify the marked alphbates
$A-$Sertoli cells, $B-$Spermatogonium, $C-$Primary spermatocyte, $D-$Secondary spermatocyte, $E-$Spermatids, $F-$Leydig cell
$A-$ Leydig cells, $B-$ Primary spermatocyte, $C-$Spermatogonium, $D-$Secondary spermatocyte, $E-$Spermatids, $4F-$Sertoli cells
$A-$ Leydig cells, $B-$Spermatogonium, $C-$Primary spermatocyte, $D-$Secondary spermatocyte, $E-$Spermatozoa, $F-$Sertoli cell
$A-$ Germinal Epithelial cells, $B-$Spermatogonium, $C-$Primary spermatocyte, $D-$Secondary spermatocyte, $E-$Spermatids, $F-$Sertoli cell
Amphimixis means
Placenta is present in
Seminal plasma in humans is rich in
Assertion : Old age is not an illness. It is a continuation of life with decreasing capacity for adaptation.
Reason : Cessation of mitosis is a normal genetically programmed event.
Given diagram refers to spermatogenesis and oogenesis in humans. Identify $A$ to $H$ correctly.