Flower Power

Here we have a diagram of a flower. 

The Stamen, filament, and anther are different names for pollen-producing reproductive organs of a flower.

The ovary is the female part of the plant it is a part of the pistil which is made of one or more carpels. The stigma is the receptive tip of the carpel, it receives pollen.

The petals are there to attract pollinators and the sepals are the little green leaf looking things under the pedals that once help protect the pedals when the flower was a bud.

The sperm and ovule are the gametes of the plants. Ovules contain the reproductive cells of the female and sperm are the male reproductive cells.

Double fertilization is a complex fertilization mechanism that has in flowering plants. This process involves the joining of a female gametophyte with two male gametes. It begins when a pollen grain adheres to the stigma of the carpel, the female reproductive structure of a flower. The pollen grain then takes in moisture and begins to germinate, forming a pollen tube that extends down toward the ovary through the style. The tip of the pollen tube then enters the ovary and penetrates through the micropyle opening in the ovule. The pollen tube proceeds to release the two sperm in the megagametophyte. One sperm fertilizes the egg cell and the other sperm combines with the two polar nuclei of the large central cell of the megagametophyte. The haploid sperm and haploid egg combine to form a diploid zygote, while the other sperm and the two haploid polar nuclei of the large central cell of the megagametophyte form a triploid nucleus. The large cell of the gametophyte will then develop into the endosperm, a nutrient-rich tissue which provides nourishment to the developing embryo. The ovary, surrounding the ovules, develops into the fruit, which protects the seeds and may function to disperse them.