In the ovum of rabbit, graafian follicle is
Oogonial cells
Corpus luteum
Corpus albicans
Theca externa, theca interna, oocyte and follicle cells
Placenta has an outer layer which is selectively permeable and hormone secreting which is known as
The fold of skin covering the penis is called
True coelom develops as a split in
In the first phase of gastrulation of amphibians there occurs the separation of
Fluid filled cavity called $...A...$ is developed in $...B...$ follicle called $...C....$ Here $A, B$ and $\mathrm{C}$ are