Megagametogenesis

[1] During the process of megagametogenesis, the megaspore, which arises from megasporogenesis, develops into the embryonic sac, in which the female gamete is housed.

[3] Prior to megagametogenesis, a developing embryo undergoes meiosis during a process called megasporogenesis.

The number of haploid nuclei in the functional megaspore that is involved in megagametogenesis is the main difference between these three types.

Megagametogenesis creates the female gametophyte, which is an integral part of pollination, a very prominent process in plants.

During pollination, the female gametophyte communicates with the pollen tube to ensure that it comes in contact with the ovule.

[6] When contact is made, the pollen tube grows through the micropyle opening into a synergid cell, that dies when this occurs.

Cereals, or the seeds of grain crops, are most important staple food to humans around the world.

Refer to the figure above to observe the process of megagametogenesis, which is detailed below.
Bisporic megagaetogenesis is shown in the figure and outlined below.