Pollen tube through wind, water or pollinators. The last step before fertilization is the growth of the pollen tube to transfer non-motile sperm to the protected egg. Pollen tubes are unique to plants and their structure had evolved over plant history. The pollen tube formation is complex and the mechanism is not fully understood, but is of great interest to scientists. Pollen is produced by the stamen, the male reproductive organ of the flower. Each pollen grain contains a vegetative cell, and a generative cell that divides to form two sperm cells. The pollen is delivered by the opening of anthers for
The Flower Girl then, other works have also been adapted into movies "under his guidance", including "The Flower Girl". The opera was intended to promote the communist ideology, by incorporating themes such as the class struggle against the bourgeois; such themes were similarly maintained in the film. In April 1972, the film adaptation was officially launched. The film was directed by Choe Ik-kyu and the script was written by Pak Hak; "Paekdu-san Group" was responsible for the production of the film. According to Paul Fischer, the author of "A Kim Jong-Il Production", "it is almost impossible to exaggerate" the importance of "The Flower