Biology, asked by patilasha911, 19 days ago

megasporogenesis. with diagram​


Answered by Abhinab08


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. This pattern is termed monosporic megasporogene - sis; because of the four megaspores produced, only one of them contributes to the female gametophyte . In some angiosperm taxa, however, cytokinesis occurs after the first meiotic division, but not the second, resulting in two cells, each of which contain two haploid nuclei. This developmental pattern is termed bisporic megasporogenesis because one of the binucleate cells, containing two megaspore nuclei, contributes to the female gametophyte . Finally, in other taxa cytokinesis does not occur at all after meiosis, resulting in a single cell with four haploid nuclei. Because all four haploid megaspore nuclei contribute to the female gametophyte, this pattern is termed tetrasporic megasporogenesis

for diagram u can look into ncert

Answered by Anonymous

Question :

Describe about megasporogenesis.

Answer :

Megasporogenesis is the process in which megaspore mother cell undergo meiosis and form megaspore in nucleus.

More about megasporogenesis :

◾This carries out in ovule of the ovary.

◾This process is meiosis to form gamete half.

◾Megasporogenesis results in the formation of haploid megaspore from the diploid megaspore mother cell.

◾At last the 3 megaspore degenerate and remains 1 which forms megagametophyte with two or three archegonia containing each one egg cell.

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