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 Poppy Is Also a Flower The Poppy Is Also a Flower The Poppy Is Also a Flower is a 1966 ABC made-for-television spy and anti-drug film. It was originally made under the auspices of the United Nations as part of a series of television specials designed to promote the organization's work. The film was directed by Terence Young and stars Yul Brynner, Omar Sharif, Eli Wallach, Angie Dickinson, Senta Berger, Stephen Boyd, Trevor Howard, Rita Hayworth and Marcello Mastroianni. Grace Kelly (as Princess Grace of Monaco) narrates. The film was also known by alternate titles Poppies Are Also Flowers, The Opium Connection, and Danger Grows