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
Daniel Pollen May 1846, Pollen married Jane Henderson, the daughter of an officer of the Royal Navy (Lieutenant Essex, RN, of Demarara). He moved with her to Kawau Island in 1847, after becoming medical officer to a Scottish copper-mining company. Pollen spent several years on Kawau, during which time he began to contribute articles to "The New Zealander" supporting the agitation for responsible government. He was also to the fore in supporting temperance, scientific, and library movements there. When the New Zealand Constitution Act 1852 became law, Pollen was made chief clerk in the Auckland Superintendent's office. From there, he rose through