DENDROLOGY

Detailed explanation-1: -Megasporogenesis refers to the development of megaspores from the megasporocyte, the cell that undergoes meiosis. Meiosis of the megasporocyte nucleus results in the formation of four haploid megaspore nuclei. In most taxa, meiosis is followed by cytokinesis, resulting in four megaspore cells.

Detailed explanation-2: -Megasporocyte is another name given to the megaspore mother cell. Megasporocytes are diploid cells that undergo meiosis to form four haploid megaspores.

Detailed explanation-3: -In ago104 mutants, megaspore mother cells form normally, but these fail to undergo meiosis and instead undergo mitosis and megagametogenesis. This leads to the formation of functional unreduced (diploid) embryo sacs.

Detailed explanation-4: -Megaspore mother cells divide to form female gametophytes. This division happens through meiosis. This process is called Megasporogenesis. It is the only meiotic process taking place in the cell, followed by three mitotic divisions.