How many mitotic divisions are required for the formation of female gametophyte?
The female gametophyte, also known as embryo sac, develops within the ovule [1,2]. A region called the nucellus gives rise to a single pre-meiotic cell—the megaspore mother cell (MMC). MMC undergoes two meiotic divisions resulting in four haploid megaspores.
How many mitosis are in the female gametophyte?
From the remaining functional megaspore, the megagametophyte (also known as female gametophyte or embryo sac) develops by three mitotic divisions, at the mature stage consisting of 8 nuclei and 7 cells (one egg cell, two synergids, one central cell and three antipodals).
How many meiosis and mitosis are required for the formation of a male gametophyte from a pollen mother cell Microspore mother cell?
After pollination, the generative cell after entering into the pollen tube divide Mitotically to form two non-motile male gametes. Hence, one meiotic division and two mitotic division are required for the formation of fully mature male gametophyte from microspore mother cell in angiosperm.
How many mitotic division takes place for complete development of female gametophyte in angiosperms?
The megaspore contains a single nucleus (stage FG1). This nucleus undergoes two rounds of mitosis, producing a four-nucleate coenocyte, with two nuclei at each pole separated by a large central vacuole (stage FG4).
How many meiosis are required for formation of 100 mature female gametophyte in typical angiosperm?
Hence, to produce 101 female gametophytes in an angiosperm , 101 meiotic division are required.
How many meiosis and mitotic divisions are needed for the development of 100 female gametophyte in Angiospermic plant?
Thus, one meiotic division produces one matured female gametophyte in an angiosperm. Hence, 101 meiotic divisions are required to produce 101 female gametophytes in an angiosperm.
How many meiosis and mitosis are required for the formation of 400 male gametes in rice?
One meiotic division produces 4 male gametes, so for the formation of 400 male gametes 100 meiotic divisions are required.
How many meiosis and mitotic divisions are required for the formation of mature male gametophyte from a PMC?
2 meiotic and 1 mitotic.
How many meiosis are required for the formation of 50 embryo sacs?
Therefore, 13 meiotic divisions during spermatogenesis produce 52 sperms and 50 meiotic divisions during oogenesis produces 50 eggs. Hence, the correct answer is option (B).