A) polar bodies
B) secondary endosperm
C) herring bodies
D) Hela cells
Correct Answer: A
Solution :
Gametogenesis is the process by which male and female gametes form in the gonads. The gametogenesis of ova is termed oogenesis. It occurs in the follicles of ovaries as follow. [a] Multiplication phase: The primordial germinal cells of embryonic ovarian epithelium repeatedly divide mitoticaly to form a large number of oogonia. [b] Growth phase: In sexually mature female during breeding season the oogonia of some ovarian follicle rapidly grow into large primary oocyte cells by accumulating yolk as food reserve. [c] Maturation phase: Each primary oocyte undergoes two maturation divisions, first meiotic and second mitotic. In the first meiotic division the primary oocyte divides into a large secondary oocyte and small first polar body or polocyte. In the second maturation division the secondary oocyte again divided into a large ovum and small second polar body.
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