The type of placenta found in human beings is of type
Diffuse
Zonary
Cotyledonary
Discoidal
(d) In human placental villi remain restricted to a small disc -shaped area $(discoidal)$ attached to the utrine wall.
Nervous system in vertebrates develops from
Location – function : Spermatid and Hyleuronidase
Notochord, skeletal system and dermis of the skin are the derivatives of
The size of the egg chiefly depends upon the
In mammals the estrogens are secreted by the Graafian follicle from its
