Pollen as large as about 90–100 µm. In angiosperms, during flower development the anther is composed of a mass of cells that appear undifferentiated, except for a partially differentiated dermis. As the flower develops, four groups of sporogenous cells form within the anther. The fertile sporogenous cells are surrounded by layers of sterile cells that grow into the wall of the pollen sac. Some of the cells grow into nutritive cells that supply nutrition for the microspores that form by meiotic division from the sporogenous cells. In a process called microsporogenesis, four haploid microspores are produced from each diploid sporogenous cell
The Grains of Sand "What a Way to Die", while its flip side, "She Needs Me", appears on "Off the Wall" and "Pebbles, Volume 8". "Going Away Baby" is featured on "Pebbles Box", "Pebbles, Volume 4" (ESD), and "Essential Pebbles, Volume 1". The Grains of Sand The Grains of Sand were an American garage rock band formed in Los Angeles, California in 1965. For a period, the group exerted a promising presence in Los Angeles's music scene, releasing three singles in their recording career, the second of which was produced by Kim Fowley. Much of the band's material found on their first two releases