Gametophyte - Wikipedia
The egg-producing gametophyte is known as a megagametophyte, because it is typically larger, and the sperm producing gametophyte is known as a microgametophyte. Species which …
Megagametophyte | plant anatomy | Britannica
The resulting megagametophyte produces the female gametes (eggs). This development (called megagametogenesis) involves free-nuclear mitotic divisions. The cell wall remains intact while …
The Female Gametophyte - PMC
The female gametophyte is also commonly called the embryo sac or megagametophyte. The male gametophyte, also called the pollen grain or microgametophyte, develops within the …
2.6.3.2: Angiosperm Life Cycle - Biology LibreTexts
Angiosperms have a complex life cycle. The microgametophyte is reduced to 2 cells, while the megagametophyte is now 7 cells and 8 nuclei. Ovules develop within the ovary or ovaries of …
Megagametophyte: - an overview | ScienceDirect Topics
From the remaining functional megaspore, the megagametophyte (also known as female gametophyte or embryo sac) develops by three mitotic divisions, at the mature stage …
Ovule - Wikipedia
In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: the integument, forming its outer layer, the nucellus (or remnant …
32.1: Reproductive Development and Structure - Biology LibreTexts
During the second phase, megagametogenesis, the surviving haploid megaspore undergoes mitosis to produce an eight-nucleate, seven-cell female gametophyte, also known as the …
Unique features of the plant life cycle and their consequences
2003年5月1日 · In the megagametophyte, a haploid egg differentiates and is fertilized by one sperm cell to produce an embryo, and two haploid nuclei fuse to form a diploid central cell that …
14.1: Gametogenesis - Biology LibreTexts
2022年7月27日 · Diploid microspore mother cells in the microsporangium and diploid megaspore mother cells in the megasporangium divide by meiosis to form four haploid micro- or mega- …
One tissue, two fates: different roles of megagametophyte cells …
2009年2月26日 · In the present study, it is shown that a major part of the Scots pine megagametophyte cells stay alive and the megagametophyte is viable and metabolically …