Megasporogenesis:-

• The formation of megaspores from the megaspore mother cell (MMC) is called megasporogenesis.
• Ovules generally differentiate a single megaspore mother cell in the micropylar region of the nucellus. It is a large cell containing dense cytoplasm and a prominent nucleus.
• The MMC undergoes meiotic division. It results in the production of 4 megaspores.