Match the items $ABCD$ of table $'A'$ with that of items in table $'B'$ then the correct pairing sequence of $ABCD$ will be
$'A' $ $ 'B'$
$A.$Cleavage $1.$ Formation of $3$ germ layers
$B.$Gastrulation $2.$ Formation of embryo spinal cord
$C.$Neurulation $3.$ Results in formation of skeleton and muscles from mesoderm
$D.$Organogenesis $4.$ Pattern depends on the amount and distribution of yolk
$4, 1, 2, 3$
$2, 3, 1, 4$
$4, 2, 3, 1$
$3, 1, 2, 4$
Cells of leydig are found in
Fructose is present in the secretion of
In mammalian sperm, spirally arranged mitochondria are present in
If the first cleavage furrow divides the zygote completely into two, the cleavage type is
Growth and maturation of Graafian follicle is controlled by ...........