How many megaspore mother cell are required for formation of an egg?

In gymnosperms and most flowering plants, only one of the four megaspores is functional at maturity, and the other three soon degenerate. The megaspore that remains divides mitotically and develops into the gametophyte, which eventually produces one egg cell.

How many divisions megaspore mother cell will produce embryo sac?

40 divisons are required to produce 40 embryo sacs from 40 megaspores. Megaspore mother cell divide reductionally, it produces 4 megaspores. In monosporic development, three megaspores degenerate.

What do you mean by tetrasporic embryo sac?

All the four nuclei of coeno-megaspore participate in the formation of the embryo sac. This type of embryo sac is called as tetrasporic like in Peperomia. The four haploid nuclei of coeno-megaspore undergo two successive mitotic divisions forming 16 nuclei.

How many Megaspore mother cells are required for the production of 12 megaspores?

240 megaspore mother cells
After fertilization, the ovule turns into seeds. (iii) How many megaspore mother cells were involved? 240 megaspore mother cells were involved.

How many Megaspore mother cells should undergo?

The megaspore mother cell divide mitotically to produce four spores.

How many megaspore mother cells are produced in a nucleus?

Megasporogenesis. 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.

How many megaspore mother cells become differentiated in an ovule?

A cell in the ovule differentiates into a megaspore mother cell. The megaspore mother cell is diploid. This megaspore mother cell undergoes meiosis to form. 3 of the 4 megaspores degenerate and only one megaspore is left in each ovule.

When two megaspore are involved in the development of embryo sac such embryo sac is known as?

Bisporic embryo sacs contain nuclei derived from two members of a megaspore tetrad whereas tetrasporic embryo sacs contain nuclei derived from all four members of a tetrad.

How many Megaspore mother cells are required to produce 360 seeds?

Since 1 microspore mother cell would produce 4 microspores, therefore, to obtain 360 microspores, there must be 90 microspore mother cells.

How many Megaspore mother cells are required to produce 100 seeds?

25 Microspore mother cells and 100 mega spore mother cells are required to produce 100 seeds in angiogsperm because 25 Microspore mother cells undergo meiosis to form 100 pollen grains and 100 mega spore mother cells undergo meiosis and produce 100 embryo sacs(ovules) {because 1 megaspore mother cell undergo meiosis …