Anthers And Stigmas And Styles, Oh My ! - Jessica Serrano

Blogpost 7

    Our cabbage plant belongs to a family called Brassica oleracea and there is a variety of plants that belong in this group. We decided to take a closer look at the fertilization of these flowering plants. A few weeks ago my group an I decided to do a flower dissection where you found the parts of a flower, that are important in the process of fertilization.

    Fertilization is the process of fertilizing an egg or plant, involving the fusion of male and female gametes to form a zygote. However plants go through angiosperm fertilization  since a plant is has both female and male reproductive parts. The anthers of a plant produce pollen which carries sperm. This happens through meiosis and then four haploid spore cells are formed. Then these cells go through mitosis. They then become pollen grains. This pollen grains must land on the stigma of a flower which

Is the female reproductive part of a flower. The stigma has a sticky surface which allows pollen to stick easily. The pollen grains travel to the stigma by getting carried by the wind or by animals that cross by. It then travels down through tubes into the ovule. A sperm then fertilize the egg. This then creates a diploid zygote which becomes an embryo and then a seed. Which then allows the plant to grow.

This is a picture of a petal that belongs to a flower that was found outside in our garden. Under the microscope the petal is see through.

This image shows the ovary of the flower. We cut the ovary open in order to take a closer look at the ovules,which are seen above.  The ovules are where the sperm goes and the sperm and the egg later create a zygote which will turn into a seed.

This image shows the carpel which is the name of the whole female reproductive system. It carries the following parts : stigma,style, and the ovary. The stigma is the rounded tip shown in the picture, The top of the stigma is sticky which allows pollen grains to stick easily which then leads to pollination. The grains  travel  through the style, down to the ovary where sperm fertilize eggs.

This picture shows the stamen of a flower which is the male reproductive system of the flower which includes the following parts : the filament and the anthers. The anthers are shown in yellow in the image above. Anthers contain pollen which contain sperm. The filaments connect the anthers to the rest of the flower. This whole structure is the stamen.