PLANTS: HOW THEY LIVE AND HOW THEY ARE MADE
The gynoecium or pistil is the set of female organs of a flower.It is formed following the transformation of said leaves carpels. It consists of three parts:
OVARY: it can be considered as a container formed by the carpellar leaves that enclose the ovarian cavity inside which there is a placenta into which the OVULES (female gametophyte) containing the female cells (which must be fertilized by the male cells to generate a new plant).
Considering the number of carpellas that make up the ovary we can have:
The distinction between apocarpic ovary and syncarpal ovary is important because a syncarpal ovary will always give only one fruit while an apocarpic ovary will give more than one.
STYLUS: it is the hollow extension of the ovary in the shape of a stiletto.
ESTIMATE: it is the apical portion located at the end of the stylus that serves to receive and retain the pollen in order to allow the fertilization process. It can have various forms, be single or there are several or missing. Furthermore, in order to better retain pollen, there is sometimes a glandular structure that secretes viscous sugary liquids.
Once the pollen grains reach the stigma, a POLLIN TUBE is formed inside the pistil which is nothing more than a tube-shaped extension that transmits the pollen grains inside the ovary to fertilize the eggs.
After fertilization the eggs are transformed into
SEEDSand the ovary gives rise to the
You may also be interested in the following articles: