Pollen cell. In flowering plants the vegetative tube cell produces the pollen tube, and the generative cell divides to form the two sperm cells. Pollen is produced in the microsporangia in the male cone of a conifer or other gymnosperm or in the anthers of an angiosperm flower. Pollen grains come in a wide variety of shapes, sizes, and surface markings characteristic of the species (see electron micrograph, right). Pollen grains of pines, firs, and spruces are winged. The smallest pollen grain, that of the forget-me-not ("Myosotis" spp.), is around 6 µm (0.006 mm) in diameter. Wind-borne pollen grains can be
Worldwide Responsible Accredited Production 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 the American Apparel & Footwear Association in 1997, WRAP became a standalone entity in 2000. While it was founded by clothing industry companies, WRAP's charter requires that a majority of its board members come from outside the apparel industry. The WRAP Principles are based on