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
Worldwide Responsible Accredited Production a facility. WRAP has also been a leader with its Fire Safety Awareness Course that focuses on the prevention of fires via the 5-step Risk Assessment Process In February 2018, WRAP became the official Corporate Social Responsibility partner of the American Apparel and Footwear Association. Worldwide Responsible Accredited Production Worldwide Responsible Accredited Production (WRAP), formerly Worldwide Responsible Apparel Production, is a not-for-profit 501(c)(6) organization dedicated to promoting safe, lawful, humane and ethical manufacturing around the world through certification and education. The WRAP certification program mainly focuses on the apparel, footwear and sewn products sectors. Created by a working group of