Immediately after ovulation, the mammalian egg is covered by a membrane called ..............[AIIMS 1998]
(a) Chorion (b) Zona pellucida (c) Corona radiata (d) Vitelline membrane
Please find below the solution to the asked query
Immediately after ovulation, the mammalian egg (released in the form of secondary oocyte) is covered by a membrane called zona pellucida. It is the layer between oocyte and follicular cells. Zona pellucida appears during the stage of formation of secondary oocyte.
Hence, option (b) is correct.