Question

trace the development of mature ovule from a megaspore mother cell

Answer 1

The ovule produces the female gametophyte, which gives rise to the haploid egg cell during plant sexual reproduction. The ovule also consists of sporophytically derived tissues that nourish and protect the female gametophyte and developing embryo.

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Answer 2

Development of megaspore is an very interesting phenomenon, where megaspore tetrad differentiate a megaspore this phenomenon is termed as monosporic development.

The steps of development of megaspore are…

Firstly nucellus differentiate a megaspore mother cell in nucellus region.The differentiated mmc undergo 1st mitotic division leading to formation of diad of cell.Cells of the diad further undergo 2nd mitotic division, leading to formation of tetrad of cell.