Describe the development of male and female gametophytes with diagram
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The microspores develop into male gametophytes that are released as pollen. ... A megaspore develops into a female gametophyte containing a haploid egg. A new diploid sporophyte is formed when a male gamete from a pollen grain enters the ovule sac and fertilizes this egg.
Gametophyte. The haploid generation of a plant produced by meiosis from the sporophyte. The mature gametophyte produces male or female gametes (or both in lower plants). The fusion of male and female gametes produces a diploid zygote that develops into a new sporophyte.The functions of the gametophytes are the production of the 'sperm cells and the female cells, and their union in fertilization. In flowering plants, the pollen grain is the male gametophyte and the embryo sac is the female gametoph yte. The male gametophyte completes its early development within the anther.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 anther and consists of two sperm cells encased within a vegetative cell (Gifford and Foster, 1989).The haploid gametophyte produces the male and female gametes by mitosis in distinct multicellular structures. Fusion of the male and females gametes forms the diploid zygote, which develops into the sporophyte. ... The new gametophyte produces gametes, and the cycle continues.