Bartholin's glands in rabbit are found in

The layer of uterus which becomes much eroded due to placental villi is known as

The branch of embryology which concerns with the study of abnormal embryonic development is termed as

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

The rolling of endodermal and mesodermal cells from the surface of embryo into its interior is called