Development of structure and shape of an organism is

$A$ : In human, ovum is alecithal type.
$R$ : It is almost free of yolk

Placenta acts as an endocrine tissue and produces several hormones like

$A.$ Human chorionic gonadotropin $(hCG)$
$B.$ Human placental lactogen $(hPL)$
$C.$ Estrogens
$D.$ Progesterone

Eggs having yolk in their centre of cytoplasm in peripheral layer are called

Each epididymis consists of a single tightly coiled tube whose length is about