00:01
Angiosperms angiosperms are the plants which can flower which can produce flowers and the seeds are closed within the structure which is called as the flower and the part which gives rise to seeds are called as the ovules so this angiosperms reproduce asexually and the process of reproduction that is how this asexual reproduction occurs with the help of spore formation like this angiosperms have two important gametes.
00:34
One is the male and other one is the female.
00:37
The male organ, the male sex organ here it is called as the anther and then the filament.
00:45
This anther has a pollen mother cell and this pollen mother cell will undergo meiosis, that is a reduction division to form structures called as the microspores.
00:58
And these microspores are haploid in nature, let's denote it with n.
01:04
And then the female sex organ, it is called as the stigma style and ovary.
01:09
And then this stigma style and ovary within the ovary or structure, which is called as the ovules.
01:16
And these ovules, each of these ovules will have a megaspore mother cell.
01:21
And this megaspore mother cell, megaspore mother cell is the one which will also undergo.
01:28
Meotic division to form a megaspore and this megaspore as it has been produced as a result of meiosis it will also be happened and it is denoted with n so this microspor and megaspore they fuse to form a proper fertilized cell that is called as the zygote and this in turn will form the another plant so here when this microscope when this microspore it is present on the this microspore is the one which in turn will form the pollen grain.
02:01
And this pollen grain is the one which will get carried away by the wind or by any other insects and it will attach to the stigma which is present in the female sex organ.
02:13
And via the stigma it will travel to the style and from the style it will reach the ovary...